Also for Gnarls, I did not rebuild the engine myself. I used a certified mechanic who had good references and he was an honest guy. The pistons are 30 over factory type pistons. The camshaft and all other parts are factory spec. I didnt go with a modified camshaft profile or higher compression pistons. I use it as a dd so didnt want a hot rod lol. I do take it fishing some though and the 4x4 is nice for that.