If you were closer I would sell you mine for $15,000 or a hair under...mine has 106,000 miles. While you may scoff at first, once you drove it and saw the interior/exterior along w/ the 3" thick file of maintenance/mods I have on it you wouldn't think twice.
My car dynoed the #'s in my sig on a very stingy mustang dyno w/ 98,500 miles on the odometer. Just ask to see any and all service records, when I do go to sell my car privately I feel like I'll instill quite a bit of confidence in the buyer as I've done: shocks/struts, LCA's, front end links, Brakes/lines, headers/catback/intake/tune, tranny flushed twice, diff changed 3x, coolant flushed once, mobil 1 synth every 5-7,000, rotations, 2 sets of tires/rims - etc. etc. etc.
You get the picture. My 106,000 mile G8 may very well be a better performing/more reliable example than many w/ 1/2 the miles simply because I HAVE driven it so much and take care of any thing that comes up (including replacing the driver's side tail light because of moisture buildup inside) - I'm a little nuts!
'08 GT sport/premium, tints 20/35, 18" TSW nogaros w/ bridgestone blizzak winter, 19" sport oem w/ hankook evo summer, Philips crystalvision bulbs, debadged, Vararam OTR, JBA 1-3/4" LT's, ported TB, MF axlebacks, MF X-pipe, DBA-powerslot brakes, russel SS lines, hawk ceramic pads, GXP shocks/struts, lovells poly strut mounts, Slowhawk Tuned 344/356
Gone -'04 GTO A4 2.5" custom exhaust, sweet thunder muffs, H pipe, Z06 heads, Baer brake it, 20% tints, torrid red, AEM brute force intake, tuned