Ah, i was just using vizards thing... he figures using 10.5:1 compression i am guesstimating mine will end up around 9.5:1 (don't have everything to figure it yet) and he said to lower the LSA if your compression is a little lower than his formula. Still trying to learn before i actually buy anything, i have a few months to go still. At the time i will probably be asking on here for recommendations anyway :)