I also just got my Gibson
I just put my gibson duel on about a week ago, and was also not thrilled with losing the spare, so its in the back on my load and go, I dont hall much gear and don't have a subwoofer back there so I figured why not. I also don't like the mounting system for the rear pipes, seems that over time it could tear the sheet metal under the Nitro, also not alot of clearace from the rear bumper cover so I'm hoping that's not going to be a issue in the summer with the heat. But I will say it sounds awesome and definitly improved preformance.
Sapper