i am building and new motor for my 91 gt. i want to use the stock block crank and rods and run between 9.5 to 1 and 10 to 1 of compression. i was going to get gt40 heads, roller rockers, e303 cam, arp rods bolts and head studs and a main cap girdle. is 10 to 1 compression to much to run on stock rods and cranks i was going to get a set of keith black pistons for it

 

which kb pistons??..........I doubt you will be at 10 to1 9.3 to 9.5 maybe