I think you migt find it way easier to buy hens teeth or rocking horse sh*t than find a set of second hand pipes.
so would like a set for my 18 but they just dont exist out there in the market. Got a set of standards that I am going to use just the header section (the really hard bit to construct) and change the cones n see what i can get. will post up results when I can.

Tom
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"No Fear" Just Means You Aint Going Quick Enough Yet.
Busa
NSR250
TRX850
n other assorted crud