My car pushed the front bad with upfront being MM everything and unknown coil over spring rates on bistiens. Rear was cobra bilstiens, cut coils, poly control arm bushings, delrin sub bushings, MM toe arms, solid pinion bushings, poly diff bushing, stock bar with adjustable ends. The car had 245 Firestone Firehawk Indy 500 tires. Alignment specs I think were stock 99 cobra specs, and I don't think the alignment shop knew what they were doing. I had never autocrossed before, and when I did the car plowed. Sometimes pretty bad. It was kinda scary. Never experienced that in a car, on dry pavement. The whole cowl and dash would shake. Took a few times to figure out what all the noise was.
The following summer I upgraded to MM bilstiens and coil overs in the back with matched springs in the front, 325lbs for the front and 525 for the rear. 275 Nitto NT05's, and had the car aligned to MM's recommended specs and corner weighted. The car was much more neutral after that with no sense of under-steer.
1993 Mustang LX Coupe H/C/I 306/T5/IRS
1997 Lincoln Mark VIII