Yes, that's my PT with Scott's 3.0" SS DP and Cat mated up to the 2.5" Mopar/Borla.
The fitment is perfect, and you can see from the pictures that Scott's workmanship is excellent. To mate the DP to the Borla system, all you have to do is cut about 4 inches off the Borla central pipe - removing the 2.25" bottleneck. I don't know why this wouldn't work the same with any 2.5" system. The installation is simple and the DP bolts are easy to get to with the car elevated with ramps. The only tool needed to remove and install the DP bolts at the flange is a normal 13mm wrench.
I already had the Borla system on my car, and the performance change with the DP is about another increment equal to the addition of the Borla system. It feels very strong on my otherwise stock GT. It also seems to have improved as I've driven it a little more. Does the computer really learn that there's a difference and adjust??? The first thing I noticed was that the exhaust note is a little louder - indicating to me that the restriction has been reduced with the addition of the DP and 3" Cat. It's still quiet enough for those who prefer comfort like myself.
I highly recommend Scott and his DP whether or not you have the stage upgrades. I also highly recommend the 2.5" Mopar/Borla dual outlet system. It's an incredibly well designed and executed system.
JohnM
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