Does anyone make a 4" cat? If not...is it fabricatable?

 

4" cats do exist but are not needed unless you are pushing over 500+ at the wheels.

 

Where can I find them?

I just might be pushing over 500 when all is said and done...I have almost a new everything waiting to go into my car right now...including a 406 which is either going to be stroked or receive a power adder.

But regardless...my new exhaust is 4"...so I'm looking for a 4" cat,..because going down to a 3" one would entirely defeat the purpose of the 4" exhaust.

 

I would check out various manufacuters web sites and see what they offer. I would check out carsound, cat-co, random technologies, magnaflow, dynomax and untrasound.