Very cool project!! I'm a big fan of these cars!! I had 2 66 Satellites and 1 67 Belvedere parts car. The bodies on the 66 and 67 were the same except for the trunk lid. Yours has the 67 grill, trunk lid and rear trim. Another difference between the 66 and 67 is that the 66 had a single chamber master cylinder (one reservoir and one line feeds all four wheels). The 67 had a more modern dual chamber master cylinder (two reservoirs and one line feeding the front brakes and one line feeds the rear). The 67 that I had was an original Hemi car that had hit a pole and it fell across the car. The roof was shaped like a V and the right front was smashed. The engine and transmission had been removed when I got it. I should have kept it and tried to track down the engine, and fixed the car with the 66 parts, but I was a kid, the the 67 parts went on the 66.
I'm looking forward to seeing more of this one!!