Great, my GXP came from Tennessee as well. I drove mine back to Colorado in 2010.
I got to drive it at low elevation first, 6500ft sure drops the HP.
GXP, 223/230 .634/.609 114+3, BTR .660 springs, BTR 7.425 rods, IWIS Pro Chain, Comp Rocker Trunions, VCM OTR CAI, Kooks 1 7/8 LTs, HF Cats, X pipe, Solo Axelbacks or Hooker Maxflows, Billet PCV catch can, CTS-V rear calipers. Updated GM trans mount, Camaro trans pan, HSRK w/ Omega 44005 Thermistor, BMR Rear Cradle bushings, BRM Trailing Arms, Pat G tune.
20% 3M CS tint, Kicker 8's, Rockford Fosgage T1D210 in sealed box, 1,000,000 uF Cap, Kicker 1000W amp, tons of Dynamat