So I got a junk OBD-II cat section for free from the dealership. Since im not worried about emissions i was just going to take the cats out. The honeycomb the use is impossible to get out. It took a air chisel and a 50 ton hydraulic press to get the honeycomb out. There is also two sections of honeycombe in each cat. So it was a totall of four elements you have to get out. Big pain in the ass but cheaper than anything else i could do for an exhaust, plus the obdII would make it true duals to the back.