Don't know if you've picked out your springs yet, but they are an easy change out, bolt in. The '62-63, are different from the '64-65, as they are the same dimension as A-Body cars, being shorter in length. The '64-65 are longer, and when using the MP Super Stock springs, require a different front hanger, to position the spring properly. If you obtain the correct springs, and hangers, it is a simple change over. I'm doing one of each, with SS springs, so looking forward to getting them in...Quick question do the rear leaf springs that mopar has for B body's fit the early 62-65 B body's?