Sorry for my earlier post, I am just having a bad week. I did not mean to say you where talking like you knew what you where doing. You just asked a legitimit question. I do think it is tuff to beat the value of a GM crate motor. full Warranty rules. I hate to see someone spend a whole summer and a ton of money and it all go to waste because they didn't knowthey needed to clean the oil holes in the crank before you assemble the engine. (I have seen it before)