thread jack: speaking of aftermarket front ends, does anyone know what coil over spring rates would be best for a street driven big block? mine rides like a 10,000 pound dumptruck, unloaded!
ridetech has a very nice online calculator. depending on your car's overall weight and the wieght balance, anywhere from 300-450 lb springs are recommended. It'll also depend on whether your running a sway bar or not as that'll affect it. but it'd still be in that range somewhere. I know my GTS has 375s if i recall correctly