for those looking to swap the diesel make sure the diesel and the gas one are the same year. Also, i think pre 93 are the easier ones, i would not touch the 2001 v8, there are WAY too many electrical mixups with that. The mechanical work is easy, all the bolt holes already exist, just make sure you have the entire fuel system out of the diesel as well. when i did mine i bought a whole diesel truck as the donor. The hard part is the electrical, making it run is easy, making it work properly is the hard part. I had a engine from a 91 going into a 93 gas, the transmissions were different so it was alot of work to dumb down the electrical. I had sent it to RADD Cruisers to do the electrical work, if you are serious about the swap talk to them. Mine was the first one they had done so it will be easier for them now. swaping in a diesel is easy, its all a matter of money... it was expensive... would i do it again.. probably not.... do i love it... definately... was it worth it... yes.