The rock sliders are after market parts your seeing the frame rails back there. There pretty solid I've landed on them a few times. Overlands did come with QT2 though thats why encourage people to look. Since you have the window sticker and looked your vin up sounds like you're in good shape bro. If the window sticker says off road group then you probably have the steal skids and two front tow hooks as well. The first pick I put up is stock the stuff you should have the second one a drew all over is all after market skids you can purchase. Probably not worth it if your only doing maybe light wheeling except maybe the belly guard, for the price to cover your cats its worth it I think. Open a garage post some pics sounds like you have a nice XK we would love to see it.