Only the people on this forum will give you a hard time about it. Most folks wouldn't care, or would think it an improvement. It has been done a lot, typical hot rod stuff, and the usual way to install a different make motor is to put on the stock mounts set the deal into the bay get it lined up and weld it in. of course this is over simplified. Speaking of simple, the advice to sell the crate and get a Mopar motor is the easiest way to go.
Myself, I wouldn't bother changing brands.