years ago i came across this at a swapmeet and picked it up for 10 bucks! all complete, but ive never tested to see if it works. if not im sure it wouldnt take much at all. has a serivce tag on the side from back in 1973 look like it was serviced. anyways i have a 51 chevy truck and the day i bought it in 1994 i held it under my dash to see what it would look like, but it doesnt quite fit. the knob spacing is off just a bit! Was gmc and chevy radios different?? i put it away after that. any help is greatly appriciated!!