3.5 or 4 Inch Cat Available?

[Hot Air]

I'm seeing the 3.5 and 4 inch downpipe coming along. Is a matching catalytic convertor available for those of us with street cars?
Conrad

 

[T-Type85David]

i think the biggest is a 3'' cat but you might fine those BULLET type out there 3.5 MAYBE not sure but sounds good, where did you get that DP ??

 

[Hot Air]

Several vendors have 3.5" and I'm starting to see 4" from time-to-time. I know that Cotton Performance will build whatever you want.
Conrad