The best thing I installed is one of the "radar" back up systems, I found a guy from Hong Kong that sells on Ebay that makes a very nice unit for under $60 and it comes with four sensors you put into your bumper( the drill bit to cut the holes is included as well) the sensors also come in colors, about 8 colors OR you can paint to match your truck, the unit goes into the rear brake light for power and activates whenever you put the truck into reverse PLUS this guy's units only give out the distances in FEET and tenths of feet, not meters as most foreign units do, the warning unit mounts with two sided tape to the housing on the steering wheel just before the gap to the dashboard and moves up and down with the tilt wheel affect...this is really nice to know how close you are to backing into a wall, bush , garage wall or whatever and damaging the bumper which wouldn't stand a simple impact...just my $.02, like it and bought more for my other cars as well..