Having had a chance to read up on the rules for GT2 and LMGT2 it is a little dissapointing to say the least.
These cars cost upward of $3 million a year to run and are so far from stock in chassis, engine, body and other components its really just a race of the money teams in "shadow" cars...
Other than the prototypes, there really should only be GT3 and GT1 cars - I mean anyone who thinks their "favourite street car" is represented in GT2 racing is sorely mistaken - these are purpose built and engineered race cars that just happen to slightly resemble their street counterparts