For the Audi... Since it's a V6 it has dual pipes most of the way back, probably about 1.75". What do ya'll think? Like this kinda, don't mind my crappy paint diagram -> Keep it dual pipe until a mid positioned resonator then 3" back? Or keep it dual pipe all the way back with two resonators, 1 muffler? I have to actually look into it a little more, but I'm thinking my second choice is the best. The cats are going to be removed.