I saw a cummings in a H2. Was for sale, Sold in 1 day. I didn't have that kind of money.

 

How about a Isuzu turbo diesel engine? Manuel Trans. That would be great in a H3.

 

The only question is if the Isuzu turbo diesel will fit the H3... don't know the answer to that. Actually, I don't think I would ever change out the 3.7 L gas engine that I have. Just too many variables with the electronic components in the H3.