I am curious about the rule Superstock used to have where you had to run the exh system on the car but you could uncap it ? I know I see alot of pics from back in the day of the 68 Cuda's and Dart's and you can see the muffler still on the car hanging down. I was wondering when this rule ended ? Ron

Alright someone must know this ? Ron

I think 70 was the first year without.

Thanks Jake. Any body else ? Ron

Man do I wish I still had some of those old rule books to refer back to.
Like Jake, I want to think it was 1970 or 1971.

That makes sense as I dont remember any 1970 Pro Stock cars with exh but I do think it was only for Stock and Superstock cars. Thanks , Ron