look at the body and floor pans for rust or repair and see if its been wrecked and if so try to judge how badly if you can get it in a a lift or jacks and check the bearings in the front by shaking the tires.Look for oil leaks,transmission leaks,radiator leaks,hose leaks and rear end leaks if you can check the condition of all the fluids and look under the dash for signs of bad wiring or jury rigged wires.Give it a drive and see how it rides and stops dont forget the check the tires ofr cupping or feathering.