I think that there should be a GTR1 and GTR2 class. GTR1 would have an LXR, a racing version of the LX, the RAR (Rac gtr, whatever you want to call it), and FZR (it should be moved up to this class). For the slower GTR2 class, there would be gtr versions of all three of the TBO cars. Just a thought.
I can't envision a class of racing in which the FZR would be racing against a LX8. How would they compensate for the LX8 having all the power of a GT1 class with half the size and weight?
Because unless you are God himself (or Bawbag :razz, you won't be able to use all that power. If you try and drive it like a FZR (which spins a fair bit), you will end up upside down in a ditch. It requires delicate movements, meaning that you need to drive it slower than normal. IIRC it doesn't have as much power as a FZR anyway