Yeah I see. Im thinking , at the cost of $500 for the initial investment for a rebuildable core 360, with the same amount of everything else the build would come out ahead in horsepower. Also lets say you have the 318 for free, as they usually were, then you have to hunt down a set of heads for a rebuildable core set, you are out about $500 there.Yes its great what can be done with a 318 but its a moot point these days in 2023. Like said the 500 spent on a 360, the heads are included, and youd need them for the 318 build anyway. Its not cost effective or practical just to be able to brag about a worked/built 318. The guy that had it will put 390 on the air cleaner anyway. It gets people talking though :thumbsup: