Thanks again Danny for the info. Here’s a couple shots of my new project. The original owner bought the car from Mike Savoie Chevrolet in Birmingham, MI as a gift to himself when he graduated from GMI (General Motors Institute). He belonged to the Firebirds auto-cross club at school and he ordered the car with some options that would help him be competitive like J56. He went on to have a great career at GM retiring in the early 2000s as VP and General Manager of the Powertrain division. It still has the original trans and rear end. What I really liked about the car is the documentation that came with it. In the fall of 1968, he complained about excessive oil consumption and fouling of the #8 plug when working at Chevrolet engineering. He worked at the Tech Center as well as the Flint Engine plant. He took the car to Flint Engine and they pulled the MO, disassembled and wrote a report of their findings on an internal GM memo. A separate memo states (Cliff notes version) your engine, serial number xxxx was replaced with a 69 Z28 engine, serial number xxxxx. The car is indeed in the registry as confirmed by Jon and Jerry.