I see what you're saying but if you want a 2t for the road...you want an NSR and if you want a 2t for the track...you want an NSR.

So, if you can't/won't/daren't track your roadbike...well...2 NSR's it is

The only other bike to even consider is a TZR and just the thought of stripping one down fills me with an urge to kill.
DO NOT even consider mentioning a VJ23 RGV, not only do they need one billion octane fuel and an all but unobtainable CDI to make over 55bhp, taking the airbox off is a bigger task than dropping an NSR motor out.
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Please do not PM me technical questions, if you can't find it on the Forum start a thread