Nice score rustednuts. Looks more like a 350 series 2 ton to me. The 450 3 ton COE's had 6 stud wheels. What is the gvw, on the ID plate.Those headlights, with small park lights on top, are original. So are the fender directionals. The directionals look like Guide D68 Turnsignals. I have several pairs, of them myself. You did good. Note how GMC, moved the headlights, down further to the front of the fenders. Chevy COE's had there's more towards the top of the fender.
