There was a member on this forum a while back (before the server crash) who installed
Eibach’s Pro-Kit performance springs and GT wheels/tires. Apparently, these mods made a huge difference in the way the car handled … in a good way.
The stock V6 will pull about 0.79 G on the skidpad, while the GT will pull 0.89 G. The differences in the platforms are: the GT has slightly stiffer front springs, a rear stabilizer bar, a bigger front bar, 17 inch wheels and 235/55 tires.
According to magazine testers, the wider/lower-profile tires account for most of this performance difference. The springs and rear bar account for the rest. Luckily, these mods are relatively cheap to perform on the V6.
The first things going on my new Stang are wider tires (235/60’s will fit fine on the 16 inch wheels), stiffer springs and a rear stabilizer bar. The only thing I’m worried about is the amount of drop.
Lowering your car affects the tie-rod angle, caster, camber, toe-in, alignment and scrub radius. The stabilizer bar should also be adjusted with shorter links to restore the original angle. These things need to be adjusted by a savvy
suspension tuner to avoid damage and provide the desired performance enhancement. More than ½ - ¾ inch drop will require an adjustment to these parameters. Most aftermarket performance springs drop the car 1.5 – 2.0 inches, necessitating these adjustments. I am having trouble finding aftermarket springs which won’t drop the car more than ¾ inch. I may have to order the stock GT front springs from Ford …