Unfortunately, the answers are no and no. It came with AZ wheels. All I have to go on is the usual circumstantial evidence that says it could have been a Z. Suspension, steering, brakes, transmission, fuel line, exhaust bracket, LG 7 crayon on bulkhead, (and this air pressure sticker). Without papers or any original drive train, I know proof is impossible. I'm just trying to put together all the puzzle pieces that I have.
One interesting story with this car came about recently. I originally purchased it 2 years ago from eastern NY in Hammondsport. Several months ago, I made a trip to East Aurora, near Buffalo, to pick up a date correct 302. The guy selling the motor was the owner of a Camaro parts and restoration business. I started to tell him a little about my car when he interrupted me and proceded to start telling me about my own car. It turns out this car has spent at least 30 years of it's life in the East Aurora/ Buffalo area, many of which it terrorized the local drag strips and police departments. He was able to give me the names of previous owners including the guy I bought it from. According to what he said, I would only be the 4th owner. He remembers the car back to the early 70's and had once-upon-a-time looked at it to buy it. He said even though not much may be left of the original car that it is absolutely a real Z/28. I was also informed the original cracked block is sitting somewhere in a garage in the upstate NY area. Attempts to contact the 2nd owner have been unsuccessful but I'm still trying. I know none of this really means anything but I thought it was a neat "it's a small world" story.