differnce between a 77 motorhome 440?

A couple of years ago I dropped a 77-78 motorhome 440 into my 66 Fury. I used Schumacher conversion motor mounts from a sb. It dropped in no problem. The problem for you will most likely be the trans, because most of the motorhomes didn't have a slip yoke for the tail shaft.

If you find a car 727 then I think that you can turn around the tranny crossmember and use it. Your biggest expense will be headers.

BTW that car would idle at 75 mph without even breaking a sweat. Great cruising car. I miss it.