116,
Sorry to hijack your thread a bit,, as you can see there is a lot of ongoing debate and opinions on the "Classic" category. Many think it expands a bit on the vintage category, some think it's for post War muscle cars, there are a bunch of opinions... however you will soon find out that opinions make good conversation, some decent research, but the rule book is all you have to fall back on.
So if your car meets the rules for classic class (weather or not a true classic or muscle car) then rock on and build it as you see fit within the body and aero rules of the chosen class and keeping with all the required safety/tech rules for the given class/speed.
Good luck and make sure you do a build diary with pics..
If you need anything, we are all here to help (encourage, confuss, harass etc.. lol all in good spirit)
Charles