Had to the same thing happen to me, all I can say is good luck. Two years of legal battles and lawyer fees and I still lost. Not many laws protecting a privately sold used car deal, and if the ad said "sold as is" you might as well forget it.
i agree with tim, those trucks are awesome, but down here in NC they are pretty pricey for a nice one. I plan on taking my grandfathers mint 1986 2wd chevy scottsdale pick up, slamming it with some nice Boyd 22'' and drop in an ls1........mmmmmm