360 magnum or 318 LA?

That is one ..... long.... sentence !!! But I think I made some sense of it and I'll just say the 5.9 magnum is a noticeable difference (by a long shot) over a 318 in their original forms. 5.9 is a roller motor, and the LA front (timing cover, etc) all bolts right on to the 5.9 if you don't like the serpentine belt system. Really, it's a super easy swap... (course you'll need a car 360 oil pan and pick up tube)