Well as luck would have it, the 340 block that I had under my work bench (a friend gave it to me) turned out to be a virgin block. I still have to get a set of main caps as they are missing). I am taking it to the machine shop tomorrow to have them look at a couple of nick's in the number 2 cylinder. It looks like going 30 over will take them out but I want to make sure before I order the Scat kit, might have to go 40 over.