Here is my new favorite muffler. This looks like the magna flow set up for much less. Take this to a muffler shop and save $.

http://www.ebay.com/itm/Universal-3-5-Dual-Tip-Exhaust-Muffler-for-Hyundai-Genesis-Coupe-Tiburon-Accent-/291079993525?pt=Motors_Car_Truck_Parts_Accessories&hash=item43c5b838b5&vxp=mtr
Here is an old favorite...

http://www.ebay.com/itm/MEGAN-M-RS-4-Stainless-Dual-TWin-Tips-Exhaust-Muffler-2-25-inlet-/330936596901?pt=Motors_Car_Truck_Parts_Accessories&hash=item4d0d5bb9a5&vxp=mtr