Concerning your recent (Jan. 2018) update to FRC Rules and Class Regulations and under the FRC CLASSES 2018 ~ "IROC" Classes - cars owned by FRC ...
- PC, LS, FTC cars now run as "Mixed GT" class
MC class
NSS class
SGTC class
So fundamentally the SGTC class isn't a FRC racing event anymore.
Your longest FRC member.
Luke