so im thinking......i orderered the twin 50mm turbo kit from HP last week.....but now i think i wanna sell it and get the twin67's ......because i kinda plan to make big HP .....and i finalyl saw my buddys cobra run last night at the track and he has the twin 67mm set up and he went 9.90s which is insane.....right now with my eaton im going 11.80's.....but im a fan of the big turbos.....just wanna get some imput on wut to keep.....either twin 50's or twin 67's ....wondering wut would be betetr for the long run in makin HP.......thanks everyone....
Ok, first I'll answer your question, and then I'll tell you what I think you should do.
The 50mm's will provide adequate power enough to get the car to go extremely fast. If for some reason you wanted to upgrade the kit later on, you can go from there, but I'd stick with the 50's for right now so you keep the quick spoolup time.
Cancel your order. I'm not sure how many of those kits you've seen in person, but I've seen 10+, and every last one of them were junk. The design of the kit is flawed, the workmanship is pathetic, and the materials they use are substandard. In my honest opinion, it looks like it was made by a meth addict in a muffler shop somewhere in Arkansas. The fact that the kit takes 6 months for delivery only compounds that fact. For the price, the kit should be much, much better than that.
Now, having said that, I would go with a Hellion kit. Not only is the kit cheaper, and on the shelf (which means no waiting), but it is a superior design made of superior materials. The company provides some of the best customer service, bar none, and the guy's wife is a babe to boot.