Swap?

Hi, I'm considering a 6.1 hemi into an A body. Not sure yet. Lookin for advice from someone that's been that route. Otherwise, 451. Things I know I want:
1. 727 or 904 tranny. No floor cutting.
2. A stand alone harness. Easy enough to hook up my gauges or aftermarket.
3. Cable throttle body, no fly by wire
4. May go carb and msd. Did it on an LS. Was great.
5. No fenderwell headers.
Fuel is easy. Gonna sump the tank and external fuel pump with carb or injection. Can it be done?