$800 for the magnaflow system is an awesome price! If I could have gotten it for that price I would have bought it instead of the OBX all day! I plan on putting cut outs in for the track. I don't mind cutting up the $700 obx. I definitely wouldn't do it with one of the more expensive systems? Do you know what the id of the magnaflow system? I know it says it's 2 1/2" but I wonder if that's id or od. The obx is 2 3/8" id and 2 1/2" od. That's why I want to put the cut outs in right after the dp's end.