Just to further confuse you...
Got a message from one of our race group here in Queensland, that let me know that the
track tyre they use is the Kumho ecsta v700....link attached.
http://www.tirerack.com/tires/tires....del=Ecsta+V700
IT's a lot of fun deciding on tyres isn't it ??.....maybe not!
Good luck with it all.
Cheers,
Warren.