I've obviously had such a sheltered upbringing I had to google Bōsōzoku https://en.wikipedia.org/wiki/B%C5%8Ds%C5%8Dzoku
Obviously a market for those pipes as there plenty of bids although not going for big money
having looked as some of the pictures I now know where all those disgusting 1970's Rickman Fairings went
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Nick
Rebuild project NSR250 MC18 R4J