i guess both,,i was also thinking of the sort,and i cant come up with anything,i feel if for me alteast if im gonna rebuild my 302,,might as well make the block fresh,throw all new internnals,,,,,via the stroker,,,theres no reason to run the risk of rebuilding used stuff and it fail a couple months later,they look like nice kits for the money,buy a nice set of heads and have a nice set up for 2500 bucks,then whatever it costs to get the block freshend up