Thanks hotrod! The truck is a SWB but with a cab VIN showing it's a LWB so I'm trying to determine if the cab was swapped or the frame was shortened.
Rarely has a frame been shortened, withou leaving some tell-tale signs, like welds, plinth-plates, gussets or other visual indicators. Since the frame is void of partial VIN characters, it seems a donor cab was placed on a swb GMC frame with rear leaf springs.
