I purchased a 91 for $500.00. I'm looking to get it running like it did in when it was driven off the showroom floor. I've been doing everything I can on the Ex by buying on craiglist, ebay, junkyard and bartering. I'm a father of 3 kids, 2 high schoolers so my budget is tight. This is what's been done so far. New fuel pump, cleaned gas tank and lines. New water pump, radiator, hoses, brakes, TPS sensor, cleaned MAF, throttle body, plugs, wires and removed AC. I want to take the truck on a long trip. This truck has always been stock so the majority of parts are over 20 years old. What is essential to change as far as sensors and components are concerned? The engine is running strong and the transmission was rebuilt in June 2012. I recently removed the condenser and added a transmission cooler from a F350. This is one of the best websites ever. Thanks for all your input.