My car was a lot heavier (S.S. D/A) than yours, and longer. We ran the 002-003 springs on it, (actually too lite) w/ the front of the rear wheel wells stretched and tubbed also. The springs had to be replaced every so often because of the weight of the car. they worked pretty good, considering the tires were not what we have today. We tore every pinion snubber we put on up in one race, it didn`t run any better w/ it on, finally gave up on running one at all. jfyi sounds like a kick a$$ car your building ! bob