I have a bit of a dilema....ordered the 3" collector version...(I want to be like Grippy)...but now what. I am going to get the Dynatech converters as recommended by Big Tex in 3". Should I run dual 3" to the muffler and then to a 3.5" after the mufflers? I have a Denali SUV so I am a little worried about noise....I'd rather be seen. I was also thinking go to 2.5" just after the cats to the mufflers and still back to the 3.5" tailpipe. What do you guys think....need to keep it quiet in the truck....oh yeah, I was thinking the 19" Borla mufflers too....