2004R in 1964 A body

Wow! Very cool idea using a GM overdrive transmission in a older early A. After the restoration of my 66’ and how little room there is for the floor shifter linkage with the stock 904 and a v8 and dual exhaust, I will take a stab and honestly believe customs head pipes and a custom tunnel will be required to make fit. Early A-bodies are also narrower than a 68-76 pan. I measured 4” narrower between my Demon and Barracuda over all.
If you can make this work can you please do a write up about this as early A body owners would and really need this information.
Thanks in advance for asking the question.
Joe