V8 swap? Or turbo slant six?

After some thinking, I've decided to keep the 198 for now. And do a very mild build. Intake, header, cam kit, shaved head, and a 4 bbl. But I already have a holley carb, just needs to be rebuilt. And while im having some fun with the slant, im going to be saving up for a 383, or 440, 4 speed swap. But that won' t be for awhile. Thanks for you're input guys! Since I am pretty young, I don't know a whole lot, so if I say something stupid, or something that doesn't make sense, don't make fun of me, haha. I've got a lot to learn.