1st Gen Crew Cab Engine

Not to be a downer, but if your serious about wanting a cummins, just buy a used one. If you are set on using that body and frame thats cool too go for it. If your asking about cost then the cost of a donor truck will be a few thousand then a few thousand for the conversion, odds and ends, custom fab etc. It probably will be around 10gs if you plan on having it done professionally. You could get a nice southern rig from the new body styles maybe even up to an 06 if you don't mind 200, thousands miles. I like the old trucks but man the newer ones are so much better in both creature comfort, and all around easier to maintain than a hybrid.