"Only a hot rod XR could out drag a B model, a stock XR was about on a par with an A"
JohnnyO you have stated my recollections precisely. A model lovely to look at, not much go. B model ,now that's got the little bugger going! C model more go again! and trying now to improve the suspension /handling set ups.
Stock XR75 lovely to look at not much go. great fun bike! Spend shit load money* on modifying XR75 and yep they could preform somewhat better, but..... Just to race just buy the B or C model Yammie
* Spend a shit load of the parents money if you were lucky