Anyway, I looked and could not find a part num on two of my front springs. I can tell you that side by side there are not any differences I could see early on between the progressive and specific rate.
Mark at PAS would know for sure.
ok thanks man, sorry if that last post was confusing, im just trying to figure out weather or not my ride heigth is going to be changed when i get new springs
ride height on a foxbody saleen should be about 25" from the center of the rear fender lip to the ground. I've checked two different setups, mine running 17" wheels with 255/40/17 and my friends with 16" wheels running 245/45/16. Both sit identical. I hope this helps.