Per 1969 SCCA rules, the B Sedan class has a engine capacity limit of 2000 cc. So the Pinto raced and the Gremlin was too big displacement, just like my Corvair. I attended the SCCA B Sedan races that included the A Sedan cars also. NO Gremlins until the later BFG series in IMSA. I have thought about using a RevoSlot chassis for a non-RS body. The C Production Porsche 911’s got added to Sedans by 1969 to satisfy Porsche since Alfa Romeo had jumped from the Production classes. I’m surprised RevoSlot has not added Porsche 911. John has a Porsche 911 that was the SCCA champion.