hmm- interesting fact westcoast- but now that i think about it, oem products are usually more pricey than aftermarket. what about peicing together used and aftermarket peices. like, whatever i couldn't find used i would buy aftermarket? would that turn out a lower cost? or just a cheap engine? last question, where could i find a list of a majority of engine components, i know the basics, but obviously not enough to build one from scratch. where could i read up on major components for building from scratch