I have a 98 Burb 1500 4x4 with 180k miles and it is in pretty good shape overall. I tow a 5500lb camper and would like to research options to increase the horse power and towing capabilities (gears?). I would appreciate ideas to increase power. I have just completed a full tune up replacing plugs, wires, hoses, belts, and it did help somewhat. Are there any kits to increase overall power or do you recommend a new gear ratio to improve towing? What about a new engine? Any specific engines recommended? Thanks for your input.