Boss,Hawg,
What truck do you have? I assume it between 47.5 and 53. My 51 3600 has a 80 Camaro 10 bolt. It's been a few years but I'm sure it was 62.5. Be advised, the 3600 frame is 11 inches more narrow than the 3200. That, I believe is only helpful if you want to tub your bed.
