If block is not zero decked, you are at 10.2 to 1 with those pistons and 68 cc #48 heads.
Zero Decked,????????????.. as far as I can remember the block was not decked, if it was it was just enough to clean it up, but i'm sure he did'nt do that.. like I posted earlier the heads were shaved just 20 thous. to clean them up.. If you need I can take a pic of the top of the piston, but I don't know how to post a pic on here yet...