Overdrive tranny in an A-body

I would have to say why not?

A stock 5.2l magnum motor makes a bunch more power than a stock 318. I you plan to modify it the magnum 5.2 already has the best small block heads mopar delivered from the factory and it is already set up for a roller cam.

Agreed.
Ya know what, this is getting thrashed around alot. I've seen articles on thiw topic and the big question is 'Does the floor need to be cut?' My question is why? Why would the hump have to be cut, Chrysler put the same trannies in all cars, 4 speed, 904 or 727. Why would the hump be different from body to body if a 727 would go in it?