[Kyleyadon]

I don't think I'd want to drop the engine size like that, if increasing displacement would increase fuel consumption I won't do that, but I still think increasing the compression would be worth looking into. I will do further research into the lighter pistons before making a decision and will post what I find. I do have to say though, the straight six is a kinda odd engine that I'm having trouble finding information and parts for so it's getting tempting to swap in a small v-8 just for the convenience. But I did find that the same engine was in the gmc jimmy and several other full size pick up trucks, so maybe if I do research on them I'll find the information that I'm not finding by researching the passenger cars.