I have a 93 Grand 5.2, 125,000 miles, with 5.5 inches of lift (tuff country and tomken) as well as 32-11.50-15 BFG's. On the free-way around 75 m.p.h. it kicks in and out of overdrive far too often, this kills my gas milage. Does anyone know of what gears I can put in to get rid of this problem and where a good place to get them. I am sure it still has the stock gears. Thanks.