904 or Powerglide???

I also vote 904 on a trans brake. I don't know a whole lot about a PG but I'm a big fan of keeping it all MOPAR! A 904 can be built and I wouldn't mind dropping my 727 and building one of the 904's I have. I've read a lil about putting 904 internals in a 727 case, apparently the 727 case is a lot stronger, just a thought. Ler us know what that monster Mopar runs, sounds like it'll be damn fast