Check around the fuel rail for leaky o-rings on the injectors. with that little milage over 12 years, the rubber has to be a bit dried. No a big problem to fix...unless it's spewing fuel onto the manifold....in which case your not driving a toyota 4Runner...your driving a toyota molatov (sp) coctail!

Personally...I think the price is a bit high. You can get a '92 Runner in really nice shape for about $5000, although it will have 160K on it. That milage you've got is great though. I'd bet the dealler trade-in on it was somewhere around $5000

...Anyway...just my thoughts.