Milling down SM 68cc CNC heads?

on a 318 with that cam, that gear and a stock converter. the cnc ported heads wouldn't be my first choice. but sometimes you gotta run what got.
i think some magnum heads would be a nice fit for your combo actually.

but then again, if you just want a good cruiser and nothing too impressive right off the line then it'll be fine and you have room to grow huh?