First time post engine rebuild advice please

welcome to the site:) ask lots of qs and stick around lol. there are a lotta smart ppl on here that will know a lot more then me but i will share a lil lol. i was lookin at 360 heads on a 318 and they are bigger so it sounds like it would be good but you lose all the velocity. so unless its gonna get forced inductior or really high rpms the 318 heads will be better for a 318. that is how i understood it anyways. my 360 got ported and bored and all and has the regular 360 heads and it is a very sexy piece of steel lol. i would suggest that to anyone looking for a good small block just keep it simple