[theFREAKnasty82]

well, putting in a 318 is not hard; the thing is, the type of fuel system that you'll be running, either carburated or fuel injected. It's easier to go carburated, because you don't have to bother with all the wiring and programming to make it compatible with what you have now in your truck. I believe your truck has the NV3550 tranny; it's a good tranny and will work; not sure if the bolt holes on the bellhousing would line up, I don't believe they will, so you would have to upgrade your tranny to fit a 318.