Thanks for your interest, Spiros, George, Rory and John, -------
Spiros, the TDR looks good, seems you had some fun with it and your friends, the # on the 500cc V8 Guzzi is 36 ! not "the" mystery, ----------
George, you were wrong about the Guzzi, the Troy Bayliss Ducati is the mystery, ---------
Rory, the Guzzi is a GP bike, you're right the Ducati is WSBK, it's also a diecast model, your RGV looks lovely, --------

Oh well, Allan @kalamazoo, you can’t win them all, good puzzle though.

Guess you cannot win them all indeed, my friends @kalamazoo and @chinesegeorge...

Amazing looks, my friend @kalamazoo!

Thanks my friends, Spiros and John, ---------
just saw a clip on youtube, sounds better than F1 they say, as good as I say !