I have a 76 Sport with a 302 and auto. I am planning on putting on a 3.5 lift with 35" tires. What gears would most likely be in my Bronco. I would enjoy my Bronco a whole lot more if I could daily drive it. I have a 40 mi trip to work daily and would love to drive it everyday. I know its an offroad vehicle but I don't really live close to any trails or offroading havens its all square miles of corn fields so I wouldn't loose much if I made it more of a highway rig. My questions are would it bve worth re-gearing the rig and also what would be best for the highway but yet not make it a dog. Is there anyway an overdrive would work from say a newer mustang or such. Am I asking to much or is this achievable. I would be happy with 20 mpg. I wood just hate for her to have sit in the garage all the time.