The other thing that gets lost in the happy memories of time is that an RC30 in stock form makes around 95bhp at the back wheel, has an 18" rear wheel and a narrow front wheel, overheats and doesn't have much top end grunt. To change all this and be reasonably competitive(it wasn't any different in the 90's) you'll need as a bare minimum - wheels, race rear shock, front fork revalve, kit radiators, kit airbox and induction, baffled deep sump, kit valves / cams, kit exhaust system, kit ignition, flowed/matched cylinder heads and somebody who can put all this together properly .. then after that you're into the horrendously expensive carbs for that last bit of bhp The OW01 was much the same but did have some trick parts fitted as stock - Ti rods, mag parts, ohlins rear shock but was much more expensive than an RC30. These aren't parts you can order on a next day delivery service either. After you've done all that will it be as cost effective and reliable as a built like a brick sh*thouse GSXR1100 engine ?, does anybody honestly think there'd be many more true period bikes out there if the "controversial" bikes weren't on the grid ? - sadly I don't think there would as being bluntly honest it's easier and more cost effective to put a faster 1100 bike out there.