upon further inspection, im finding out that the heads arent for a 454 but the correct 400-402 heads. the casting # is 353049. Im figuring out that the years they were made were 70-76 with that specific casting # on them. the block casting number is 3969854. Im wondering what kind of heads will work best that are cast iron? (i.e. stock 454, 396, or the 402 heads that i have) I'm basically looking o build the 402 as a stroker, but i dont know exactly how big i want it yet. ( What are my options on sizes that i could bore over too) also, id like to know what heads and crank will work best for the bore and stroke that i pick. i appreciate any and all help i can get!!

-Michael