I have a Mopar A833 four speed bolted to a 1956 model Chrysler 331 Hemi. Bolted right on. A deaf, dumb, mute, blind, retarded chimp could have done it. You're talking about a 1" plate and a 1" spacer for the flywheel or flex plate. Nothing complicated or complex. Right. From your original post, from what I gathered, you were keeping the slant six. Have you decided against that now?