this is a serious question serious inqurys ony. did the early model preludes come with a type of b20? this is something a friend of mine told me and i heard a few other people tlaking about. not dumb sources actually realiable sources and a couple of them are on here. so any help would be appreciated. i also got told that the b20 they came with was completely different from the b20 we know today and that it wouldn't bolt up normally like the b series stuff does to do to other b series stuff.