My understanding is that the GTP was the predecessor to and replaced at some point with the GXP but was really only fascia changes. Engine and transmission carried over to the GXP.
Oh, and Sonders, yeah that Aura XR is pretty slick. I see a lot of them around. I love my GXP but I would drive an Aura XR.
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2009 Techno Gray Metallic G6 GXP Sedan (3.6L Auto6 112K miles)
CRAB Intake Opt 3 w/FPU, Lloyds GXP floor mats, HIDs low 6000k 55w/fog 3000k 35w, LED DRLs behind lower grills, V3 Triton LED turn signal/reverse/brake, LED side markers/maps/dome/tag/trunk/high mount stop, 2 coats niteshades on tails, Tint 35% all around, Debadged (except arrows), PAC IPod and BT adapters, PowerStop D/S rotors and ceramic pads, Resonator repl w/24" cherry bomb, Racingline STB, Big 3 Upgrade, Optima Yellowtop D75/25, Blacked out arrows, chrome window trim and black dipped wheels, KYB struts and shocks, CM lowering springs, Cherry Bomb Vortex Crossflow muffler, 2.5" pipe from axle back, two 4" stainless double walled slant tips
Last edited by mshinall; 07-12-2014 at 11:33 AM.