House Rockers from Saitama
The engine is fitted with bigger Wiseco pistons, taking it to 836cc, the frame reinforced in 13 places and aluminium and other lightweight alloy parts have replaced numerous of the steel originals – from the oil and fuel tanks to the battery box.
Priced at 3,500,000 yen or $40,000, they're street legal and look hot! Yes yes yes it is pricey, but there's a lot of work and a lot of high end parts like a Kayaba fork, Brembo front brakes, forged race crank and cam, Yoshimura carburettors, and Ohlins rear suspension.
Not bad for a 40 year old motorcycle!