When I started reading the rules for the new class STS2 being offered by the SCCA I started to salivate...
STS2 will follow the STS rule set, but the eligible cars will be restricted to two-seaters with engine displacements of 1.8 liters or less. This class will provide a home for a number of popular vehicles, including the Honda CRX and del Sol, Mazda RX7 (non-turbo, '79-'92) and Miata ('90-'97), Toyota MR2 ('85-'89), as well as other similar vehicles. STS category rules 14.1 to 14.10 apply. Further, as in STS, only original equipment viscous limited slip differentials are legal in STS-2.
That was until I read the list of excluded vehicles...
Excluded vehicles include Lotus (all), Mazda Miata (99+), and Toyota MR2 ('91-'95 and '00+).
It looked like a good fit but I guess they were affraid that the Lotus would dominate.
More info on the new SCCA classes can be found here:
STS2 and STU