If you averaged a finish of 5th or better in Season 1 of the TCB series (even if you only competed in one race), you will be limited to running in the TC class.

Drivers getting bumped to TC:
Squid
oddball
Leadfoot
Pancho
Moesavy
itsjustbe
The Bulin Wall5
Roscoe

All other drivers can choose to race in either class. However, given that the fastest drivers from TCB Season 1 have been moved to TC for Season 2, it would be expected that any drivers known to be consistently faster than their peers should sign up to run in the TC class.

Drivers remaining in TCB will retain their build from the end of Season 1 with one exception - revert to Stock Transmission.