i have done intakes with just reg not hi-temp and havent had any problems..biggest probalem with intakes, valve covers...actually anything used off a engineisgetting the sucker clean..belive me...whenyou thinkits clean...do it all again and again...new parts are a dream.. old parts hold more oil and **** inside the metal...and there isnt a whole lot worse than to put on what you exspect to be a show part...just to have to strip it all down and do it again..just because of the out gassing....really...read the tips section here...ask some questions....then do it...practice on other stuff first...any questions feel free to e-mail me..
Wayne
waynesblades@harborside.com