haha...my OEM plastic one fits my genuine GTR just fine. But, if I were to fit it to a GTST, it wouldn't fit quite as well because it would stick out too far on either side for the skinny rear guards.
I may come down on the 14th, not out to prove anything...unless you choose to run on real street tyres, with real street fuel, a cat and a quiet exhaust? Maybe you can run a manual too...or have you forgotten how to change gears??
Seriously though, will be great to see you run again, so may come down either way.