Don't worry about it. I understand how snow can be a pain. I am not sure if I want to go duals or not. The Thrush with the stock piping is starting to grow on me. I wish it sounded like dodge dude94's truck though! A 360 and a 3" tailpipe helps his cause I think...
My vote is go duels, I have ran it that way from new. Two 2.25 pipes, one H for the for the pre 02 and one H for the post 02. She has never had a cat or cats on it.
I have changed it up a little in the past year from two super 44's to one stainless magnaflow, two in two out cross-over muffler, then side exit in front of the pass side tire.
The super 44's and my motor well it was just too loud.
This time around I made it out of what they call stainless pipe and dropped the rear H and just put the post 02 in one pipe. The whole system is now stainless including the band clamps. I have to take it back in and have them remake the one pipe off the drivers side header they did not get it right. Also have plans to move the tips to behind the wheel again, pita to keep that wheel clean.