with that in mind, maybe this:
Production Cup
400
&
250
two wave.
and the 300's would ride with the 400's since they seem to be on a similar playing field.
If Honda, KTM and some others start tossing 350's and 400's at the market, how cool would THAT be!!??
I will make the suggestion in the rules thread because I think we need to be prepared to allow those bikes if they actually do come.