I have a 1977 M882 with a stock 318 and have always had a severe case of Cummins envy. I swear every time I hear one of them I think of someone driving a street legal Corn Chopper! From what I've read and heard they are amazing engines.

My question is what would be the likelyhood of getting one of those babies to fit and properly function in my truck, without major mods or having to replace all the running gear to handle the torque?

I should also note that the truck has sat for almost a decade and I'm about to attempt to get it road worthy again and either need to rebuild the 318 or get something in it's place.

Anything you can add would be helpful as I've recently been rebitten by the Mopar bug.