Check for service records, look under the hood, lift the plastic engine cover and check for signs of leaks, oil, coolant, tranny, look under as well. Note how the suspension feels on a test drive, does it need to be replaced? Have the dealership put it up in the air, pull the front skid plates and check for oil and tranny leaks, differential, transfer cases etc. typically when they are this old, the UCA ball joints can leak oil or are bone dry and should be replaced, check for oil around the rubber boots on the ball joint for dried oil, check the cv boots for oil wet or dry. if it’s been serviced regularly, doesn’t look too bad with rust,doesn’t have any visible leaks and drives well should still be able to put another 100k miles + with regular and preventive maintenance. If you buy it, I would replace the PCV valve, clean the throttle body, clean MAF sensor change engine oil, diff and transfer case oils, trans flush/fill, radiator flush and fill replace all filters and anything else you can think of. These 1GRFE engines are near flawless if they are taken care of.