thanks for that advice ole don; i know some have the logo, some don't. no logic as to which ones do/don't, i.e. intake vs. exhaust
to be honest, saw this reeeall cuute, valve assembly tray on speedway, and figured there might be some reason it all needed to stay together. i don't plan on canning anything, i just plan on replacing all i can afford to, with new, but only if better.
thanks again