Bone stock 360 installed for the built shortblock, and you can keep the original 5.9l (with the assumed cracked heads) from the Durango as a core if ya want.
Or buy the Durango and shortblock and do whatever with whichever... and I don't care as long as I get my end and don't have to do a motor swap. Not lazy, just lack time, had to sell all my projects, turn down work - just too busy with the day job and family.