The inside of my '51 is nearly all stock except for the added on Chevy heater and some older style gauges. I wanted a CD player / FM radio but didn't want a black box with digital lights and no control knobs hanging under the dash. Also didn't want to take up space in the glove box. So, bought an ol' chrome Montgomery Wards 4 & 8 track tape player at a garage sale for $1. Then gutted it out and made the face hinged. Since the control knobs were attached to the mechanism inside they needed to be screwed on from the back of the face, to make the front appear stock. Then the Pioneer Supertuner slid inside. It was a tight fit and I had to grind a couple 'nubs' sticking out from the side of the case. On a funny note I had my friend over that saw the 8 track sitting on my workbench a couple weeks ago and wondered what I was doing with it. Told him it was going in my truck. He said "where ya gonna get tapes" I told him "I don't need any" Yesterday he came over and I turned it on and said "listen to the old 8 track" He says it sounds great and then takes a look with the reply "Hey wait a minute, there's no tape in that thing"