Go buy a late model zx14r 2012 up. That should do it?
The zx10r with a hot shoe driver would still be faster but the 14 might have a tad more grunt.
Hopefully the rules should not change much. I hope they loosen up on displacement just a tad to allow the newer 2500cc motors to run. I have about given up on the V6. It's a shame however because they don't know what they will be missing out on if they don't try it. My mom tried the same thing with me and broccoli.
It would be good to know earlier that December for sure.. I have 1K GSXR and would like to know if we will be up against 1200 next year.. I hope not....
A good stock GSXR will out run most all of the old Boat Anchor 1200cc motors out there. 1000cc is a very good place to start. Your starting position set up and driving ability will be the major factors in your success. Check out in Illinois at the IMRA and see what kind of engine is doing all the winning. If you are as good as Andy Baugh you will be up front.