First, thank you in advance for reading and hopefully I get some help here. So a back story on my car. I have a 1975 Camaro that has basically a race car interior with a roll cage and a lightly built 350. The issue I am having is that I can't find anywhere to road race this car. I checked SCCA and my interior wont fly in their muscle car class from what I can tell. Other racing organizations don't allow my year to race. The cut off is always a couple years before my model. So the question is, where can I race this without being placed in a class with Corvettes or what would I need to change to make it legal elsewhere? I know this model was used in the IROC series. But I can't find a build sheet or specs on those cars. Thank you again for reading.