Norm, you are correct with exception of the year, they are 65 396/425 HP Vettes. I tried buying that car from Paul Sedaca before I found mine. The owner I bought my M22 Tanker Vette from, found it to be an M22 prior to Peter Fonda-Paul's Vette. My 65 M22 Vette was the one that solved the puzzle for 65 M22 Vettes. I have all the original paperwork etc, on my Vette. The original order invoice states "Competition Race Order-RUSH", as it raced in the Canadian Grand Prix. It was delivered to Gorries Chevrolet in Canada, which also produced the Black Panther Camaros.
Although Paul knew his was a Vette owned and raced by Peter Fonda I believe it was the ex-owner of my Vette, that informed Paul that his was also an M22, prompting Paul to contact Peter Fonda. You can read about mine in Al Colvin's "Chevrolet by the Numbers" reference book. All the 65 M22 Vettes had cases with the casting numbers milled off, and were all stamped P0415 (April 15, 1965)assembly date. Before my car came to light, NCRS had the position that absolutely no 65's had M22's. Another example of "never say never".