Any word on a C36 system ?

I really think the existing setup is way too restrictive.

I'm in Florida, and would like to have a street & race setup, either both without CATS if it makes an improvement, or street with resonator & rear muffler, race with straight pipes, or something else.

Basically I have a C36 drivetrain into a W124 wagon, and 3.07 LSD. I'm placing 1st & 2nd in SCCA autocross, but would like more power.