2005 Dodge Ram 2500

Body is full of rust but the frame isn't as bad. Rear passenger door not opening. Runs and drives but needs computer to shift correctly. Had new Towmaster Stage 1 Monster transmission installed with new TTVA but shifts hard and has engine light. Mechanic said computer needed. Injectors replaced less than 10,000 miles ago. B&W flip over fifth wheel. Decent Firestone Transforce tires. Newer headlights. Intact dash. Yes it does have a tailgate, still cleaning it up.