with pacesetter LT headers and magnaflow CB exhaust what do i have to do to not have cats?what will i fill the gap with? thanks

 

Buy the pacesetter off road y pipe and your all set

 

Its such a easy setup, the intermeditate pipe of the Magnaflow catback is slightly oversize so it fits perfectly over the Pacesetter off-road y-pipe. I sealed the two together with a 3" band clamp and it turned out great. No welding was necessary.