I have Toda header, will be getting metal cat (getting flanges welded on) and fujitsubo PG, on its way, should be arriving soon. Can anyone give me advice on how to install catback, how & whats need- gaskets, sealant so on and so on the more technical the better. Its going on a DC2R. I wanna install myself cos i've been quoted from $250-$300. Or is it better to get a pro to fit it?