Thanks. The GTX's have nothing as far as performance go. Only thing different under the hood is the intake resonator is painted the same color as the truck. Other than that, its all just cosmetics. Paint job, cowl hood, rims, graphics, and the interior is black and orange(or same color of out side of truck for other ones) Italian stitched leather. And A matching steering wheel. Oh, The muffler is different than other rams too. The GTX's have a custom built Pacesetter muffler to give them a certain tone. Problem is, You can only get the exhaust through LA West (the shop who turned these into the GTX) since there is no part number for them. But they aren't the best quality mufflers. Right now, I have no tips sticking out the back, because the tailpipes have rusted off at the muffler, and the muffler is cracked causing it to rattle at certain rpm's. I figured this is just my truck, but on the GTX forum, it seems to be everyone that has that same problem, so I guess they just aren't that quality of a muffler.