Yeah, torquetech makes a 3" dual. You need a catback though. Buy a pypes kit though. You wont flow more than the dual 2.5" it has. Your stock DP is 1 3/4" ID anyways. Even a single 2.5" would flow enough. Even with my 2.5" DP my exhaust isnt even close to being 'full'.
Like I say, if you want a dual, get a pypes. Its the cheepest best one out there. All I had to provide was a test pipe, and an extra clamp and another hanger as the one they sent was wrong.
You could run a single 2 1/4 with a ultraflow and have more CFM capability than that poor stock DP. IMO upgrading exhaust is almost pointless with the stock DP as far as picking up speed if you have a set of Ultraflows or the equivilant.
Thread hijack over.
That exhaust looks awesome. Do you worry about drone at all with such a huge tube?