Slant 6 to 360 Swap

I have a 71 Duster with a 225 slant six and was planning on swapping in a 360. Would purchasing one from one of the various remanufacturing companies be a good idea? Also would the current 904 be able to handle/bolt up to the 360? Thanks.

that is a slant six only 904, youll have to find one for a small block. As far as engines go, id rather build my own. mopar sells a 360 crate, that is supposed to be alright but not the most powerful thing ever made. Depends on how much money you want to spend.