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Discussion Starter #1
I should have done this before asking to purchase coilovers but I'm asking now. I see many people asking about length and pressures. How do I know what is best for my set up? I have a 91' 5.0 with and 03' Cobra suspension set up. I like my car to have a low aggressive stance and to have the rear sitting a little higher than the front. Currently i have cut springs all the way around and it gave me the stance I wanted, but up until recently the rear end is sagging like an old fart of a man...LOL!!! I want to go coilover cuz I was told they are stronger and last much longer than the standard set up. So as you can see i'm a little lost. Any and all responses are much appreciated.

Thank you, Shawn
 

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I think on the front, tire/wheel clearance is the main concern. The longer the spring and more "bulky" the C/O design, the more likely there will be interference with wider wheels/tires. I run MM's C/O designed for Bilsteins and a 10" spring. I have no clearnace issues with an stock 96 cobra 8" wheel with 245/45/17s. In another thread, I beleive Jack Hidley indicated the Bilstein body provided the most clearance. On the rear I opted for MM's adjustable-height lower control arms, partly due to price compared to a full C/O kit. This provides more than enough height adjustment without intruding on wheel/tire clearance some have reported.
 

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Coil overs are the #### /end debate. Can change springs easier, work on the front end easier, its SAFER, and ride height is easy to adjust. But remember after adjusting an alignment is necessary.

When you say 03' front end? what do you mean? Be specific.

I'm running 03 Struts, and MM coil overs. Also remember not to get crazy with spring rate. I'm running 12" 275lb as recommended by MM and the car rides excellent and handles GREAT.

No wheel/tire interference with 255/40/17's on 17x9 5.94 BS (+24MM offset)
 

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Discussion Starter #4
What I mean by 03' is I have the Bilstein shocks all the way around. The front springs are stock and the rear are Cobras but cut down a ring and a half. I have 245/45/17 and even though the front tires are slightly tucked don't have clearance issues. As of late I started to get rubbing in the rear. At first I thought the shocks may have failed but after taking them off and inspecting them they are fine. Then I figured it had to be the cut springs that have lost their bounce so this is why I want to go c/o. Also I have the IRS in the rear so it makes for clearance issues when it comes to a tire too wide. That's a whole other issue that I may have to do fender work for.
 

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Find a wheel combination that allows you run a standard 94-04 wheel in the front and S197 backspacing in the rear.

I have wider axles than stock and this is what I did. I run 17x9's with 36MM+ 6.4 BS from a S197.
 

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What I mean by 03' is I have the Bilstein shocks all the way around. The front springs are stock and the rear are Cobras but cut down a ring and a half. I have 245/45/17 and even though the front tires are slightly tucked don't have clearance issues. As of late I started to get rubbing in the rear. At first I thought the shocks may have failed but after taking them off and inspecting them they are fine. Then I figured it had to be the cut springs that have lost their bounce so this is why I want to go c/o. Also I have the IRS in the rear so it makes for clearance issues when it comes to a tire too wide. That's a whole other issue that I may have to do fender work for.
I have an 01 Cobra. I run H&R Super Sports with '00 Cobra R Bils. The ride is pretty nice with this H&R/Bilstein combo and the stance is very aggressive, mostly because the front is too low. But the rear is about right. On the lighter Fox I'd guess it would sit too high. I can say the stock IRS springs were way too high. On an IRS with C/Os, there may be a different set of concerns such as component strength, but that would be something to discuss with say an MM tech, or visit the Full-tilt Boogie site (Full Tilt Boogie Racing). I do recommend C/Os for the front.
 

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I run coilovers cuz I can slam my car to the ground. Errrbody knows I have the lowest mustang in town. I just let'em hate...cuz thats whut haterz gon' do!
 

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Yo mamma.
 

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I run coilovers cuz I can slam my car to the ground. Errrbody knows I have the lowest mustang in town. I just let'em hate...cuz thats whut haterz gon' do!
looks good, but wont handle good
 

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With it dropped so low, it FEELS like a straight line! They usually let me go to the front of my track day sessions because they know i'll just be passing everyone on the first lap. Hell, sometimes the warm up lap i'm passing people. On accident of course. I give them the point-by if I accidentally pass them.....then I just re pass them again when we get the green.
 

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wow, impressive, what are u using for Suspension?
 
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