This is just a suggestion, don't pass on a trunion big block case as all you need is the shaft and the tailhousing to make the conversion. That shaft and housing can come out of a 1965 Poly transmission.

Junkyardmaxie, any chance you might be going to Indy next month? May get in touch with you sooner but let me talk to a buddy of mine tonight. Thanks, JP

Mike here is a whole transmission for $350 in Penn.
https://board.moparts.org/ubbthreads/show...part=3&vc=1

The info , Imperial Services po box 112 Frankenmuth Mi.48374, phone 989 652 6309, E-mail info@imperialservices.net
Doug

HERE is the Art Carr shifter .......

jp probably wont go to indy will also be at the classic events all mopar show at columbus state fair grounds last of feb .or will ship one of these units to your door for $215 i will help you some on the shipping. let me know thanks bob

mike, here are pics of the 1965 big block tail housing, and shaft,for the push button trans.62-64 ready to install cleaned,painted, new rear seal.$215.00 shipped.i have 2- units to sell if you know any one interested please pass it on .thanks bob I HAVE ONE MORE UNIT LEFT

another picture

Bob, you should have an e mail from me, I'll take it. Thanks, JP