300 HP out of a 318, is it possible with bolt ons?

There you go. We shouldn't use "bolt on". Where does it stop? :BangHead: :lol:
I think it has different meanings for different people. None of us has the same skill level and certainly not the same pocketbook. I do agree probably 95% or more of the time when you see "bolt ons" it means anything outside the basic long block. Induction, distributor, headers and whatnot.