Stock 49, About an hour or so after I posted yesterday I rembered that the number of head bolts was increased sometime in the 1950's. I had forgot about the side cover differences until I read your latest post. If I was going with custom pistons I would only have the head and block checked for straightness,removing nothing from either if I did not have to.If I may ask what is the final compression ratio going to be? What valve sizes? When you do the build please post a picture of the "Jet oiling system". I and probably many others have never seen this type of system.(born too late) Jay
