I just started workin on this model and i need help keeping the pipe on. Im not sure how this pipe is held onto the header. It doesnt look like thiers a place for a coupler to mount to on the pipe. Also i need info on what to get for the rubber insulator, it looks like a flat band the header has a flat surface that band slips onto not a round oring style. Maybe this looks familier with you ol school DF guys. Sorry for the low quality pics but they may help[].