74\' body on 77\' frame and a air compressor question. I was hoping you guys could help me with a few questions. First I found a great deal on a 74' k-5 body. Will this mount on my 77' frame? Do all the mounts match up? Also does anyone know how to convert my a/c compressor to a regular air compressor? I want to mount a tank under the body of mt blazer. Thanks.