Originally Posted by tbzep

I'd probably build it with a standard 24mm mount. I could easily build up a sleeve for a 29mm motor tube, but I'd probably never fly it on anything more than a C. It wouldn't be worth fooling with adapting down to 24mm or 18mm for every flight. It would be more of a resto-mod type build with a modern 5.0-5.2 Coyote/ Mopar Hemi (24mm) or LS/LT (18mm), instead of the old big block 440/426/427sohc, etc. (29mm).