AR-5, r-154 Anybody actually done this

Alright everybody. I am continuing on working on our 1972 coronet lemons car project. Car has a 318. Anyways I am looking into our transmission swap. Right now we have an A833 overdrive. Nothing wrong with that. Sourcing a bellhousing is becoming a little bit of a pain as well as factory pedals. Well at least for a good price. I don't want to spend $600 on pedals and linkages. Then another $300 in a bellhousing (seriously what is going on with mopar prices). So I was wondering if anybody had done the Dakota Bellhousing with a r-154 or ar-5. Seen talk of it but nobody actually goes anywhere with it. Is there a reason nobody has. Anybody have any good links to info. Not worried about doing custom work. Just trying to find answers on basic things like input shafts, clutches etc. Stuff like slave cylinders would be easy as well as getting a driveshaft made up. Even making a mount is not hard.

Yes this is on the b-body page as well. Since both cars use the LA engine I figure I would hit both forums for more traffic. Anybody in the A-body land used any of these transmissions?