I'm doing a little research on exhaust and was looking for some opinions on these. (Yes, I searched and didn't find the answers I was looking for).

First: Can you use cats with these? If so, where do they go? single or dual?

Second: Do these mandate a true dual exhaust? Any body have pictures of their setup?

Third: Would these be too much for my (stock) ZZ4? How about a 350/383/400 pushing 400rwhp (my final goal)?

Here's my requirements/info:

Must support 400rwhp.
Must be quieter and sound better than open headers.
Have to be able to use an O2 sensor. Heated is ok.
Have to have cats. Single or dual doesn't matter. Location doesn't matter.
Have to have mufflers. Single or dual doesn't matter. Location doesn't matter. Tailpipes must exit straight back under bumper.
Dual system (if required) must utilize a balance or crossover pipe.
Pipes must clear Moser 9" Ford rear, Steve Spohn retrofit T56 crossmember/torque arm, and Global West SFCs.




------------------
"Beware he who would deny you access to information, for in his heart, he dreams himself your master"

'84 Black Camaro ZZ4 M5 (V-6 in a former life) -- street beast
'91 Medium Blue Metallic Z28 A4 (UB-HSTRY's old ride) -- currently broken
'99 Navy Blue Metallic Firehawk #120 M6 (99.44% stock) -- daily driver

 

****, I posted this to the wrong section. Someone please move it to Exhaust.