I read no GPs just GPA's. Good thing we use slicks on the big bikes.
When talking with Sandy in December when I bought my D211GPA's I asked about UK vs US and he said the US is now using all the same construction techniques as the UK, so the gap between GP and GPA has shrunk to almost nothing.
KR451 rear for sure, don't know about the front.I assume that the spec tires will be similar to AMA. For me at least that will mean the KR448 front and KR451 rear.
Believe it or not that was the first time Rob and I have been able to punch it up on the track!