Bill, I stand corrected on the GMC.........I've been researching for a tech tip on the swapping of the crossmembers of the 63-66 trucks for later series 71-87 Chevys. I have run across a few 70-71 GMC's, and the rears were coils, just like the Chevys.....I haven't run across a 63-66 Chevy 1/2 ton with leafs yet.....I just assumed that since the 70's GMCs I saw were coils, that they were the same as they chevys of the same year. I couldn't see them going from coils to leafs to coils then back to leafs again, but evidently they did......but you know what they say about assuming........!
Thanks Bill and Brad for the clarification.
