Destroked Small Block?

Umm yeah, the 305 Dick Brooks was running was a SMALL BLOCK and not a Hemi. I think they culled a Keith Black Trans Am series unit for that effort. I have a Bryant billet 3.25" 340 configuration crank that I'd like to try in a 318 or 340 block, but it has a generic (Chevy) flange on the back. Also have a 3.25" 383/400 Moldex crank that might be interesting (396" long rod 400 B). I even had a friend grind me a 3.5" 383 steel crank out of a smoked but not bent forging. Have all the stuff to build a 422" (destroked 451-lol) out of it, just haven't found the perfect (light!) chassis for it yet...