Vinc..like I said...generally a 350 will make more power per dollar than a 305, eheather were talkin 250 HP or 500 HP. If you have a 305 & you want to build, by all means go for it. I like to do things differant to, of course when the hood is open, its not really any differant to look at than a 350. Hot rodders dont do things logical, we do things that make us happy. if a hot 305 makes you happy... be happy