Ok to clarify for you, the block was a '68 block, with STOCK 6pk rods and pistons, stock 906 heads, the rest was not stock.....it didn't have the 6pk set up but an 850DP with a team G intake which probably was down on hp some to the triples@top end and it had a race cam instead of the hyd. 6pk cam, with 2" f/wells to be precise and not manifolds and it didn't have steel shim head gskts but .039 fel-pro's, so it wouldn't have the stated 10.5:1 which I doubt any of them were as stock, hope that helps.