New guy with a 70 Duster

Hey all, I am new to the forum and new to MOPAR's for that matter (Chevy guy...sorry). I just picked up a 70 Duster....the body is in great shape but the slant 6 in it is toast. the good thing about the deal is that the guy gave me a 360 and a 727 with the car.

My first question is....what changes or mods do I need to make to put this combo in? I want to drop it in first and see if it runs before I decide whether it needs to be gone through or not, any help would be much appreciated.

Oh and my name is Steve.