X pipe H pipe or side by side

yellow rose said
I agree with all this except that all street cars run full length exhaust. I have not run a full exhaust on my street toys since 1981.

If you are not required by law I see no use for it.

Agreed - and nothing against it but I value my hearing too much. The small gain in performance isn't worth my going (more) deaf ;)

I was speaking more generally in that constraints for a street car typically include some sort of exhaust system.