That Monte would have to be a very rare I would think. I have a classification guide I bought in 96 when I was building a 68 Chevelle with a 396/375 and turbo 400. It got stuck in paint jail and after I got it back I had already put everything in a Nova so I sold it to a friend who finished it and after running it for a couple of years was told by a fellow racer that the 400 was never offered that year. It passed tech in several divisions and is now shown to be legal since they started differentiating be between standards and automatics. My question to the Kentuckian and Mr. Bell, was there another classification book that broke down what trans were available with the different HP motors?