For all the time and money your gonna spend, buyign part's and on shipping, if you can find a GTP in scrap and get the heads, how come you can't get the rest of what your needing? I just don't understand.
Like I know that's kinda hard to say, but I make LF thread's cause there's no GP's in scrap around me. But to each their own, good luck gettinw hat you need man.