i have the mac catback with prochamber and think it sounds pretty good, better than flowmaster. went with the prochamber vs an X pipe becuase X pipes were said to lean more towards higher pitch and crackling. i dont remember but think the eliminators just plug in and then you wire tie them up, super easy though whatever the case. mine i had to cut some notches off of the MIL on the one side becuase the 2 sensors have their plug in slots offset and the mils are identical.

 

thanks for the advice. actually rethinking whether or not I want to go the midpipe route right now. I had flowmaster weld-ins, not sure which particular flowmaster mufflers they were, but the MAC catback sounds waaay better than those flowmasters did. I'm very pleased with the exhaust and how it sounds, so I might try and go for some 3.73's or 4.10's. damn i wish I knew some people with those gears so I could try them out myself to see how they drive.