I'm not to worried about the spring rate, the car is a 68 Plymouth Valiant with a all iron 340, other than the intake. I want this car to be a good all round driver not a full blown race car.
The biggest problem I'm having is what to do with wheels and tires, I would really love to stick to 15" steel wheels and some 225/50 and 275/50 tires but I can't find anything that would work in those sizes.
If I do have to move up to lager rims I will most likely go to the 18" FR500s that Bergman sells with 255 tires on all 4 corners.