So I just got my flowmaster 50 series delta muffle in the mail today to find out that it was a 3" in and a 3" out while my stock muffle is a duel in single out. My question is should I return it and get the 50 series suv muffler which is a 2 in single out or have the exhaust shop make a custom y pipe for $150 and how ever much more for piping? Also does anyone know of a good sounding cat back exhaust? Thanks