sweet,
I forgot to mention, if you open the hood and see lots of power add ons
that would be a turn off for me.
also at that mileage, most 4x4 are going to need some front end work, which can add up big time, that is why many trade them in at that mileage.
when you find your special truck, I would take it to a trusted mech and give him a $100 or whatever is reasonable to check it over, that might be the best money you will spend if you finds some big time item that you missed like low compression engine or transmission slipping, etc:
most all are going to need belts, shocks and tires at that mileage.