I have a Reese 18K signature series on my '03. I installed it myself, I am impressed with the quality of the hitch, the signature series is pretty new it uses a under bed mounting system, and leaves the bed completely empty when it is removed, I have the slider but I am not sure I really needed it, I have played around with the trailer in the driveway and I can turn pretty sharp without being slid back, plus I can see the trailer very well and how close it is to the truck. The signature series has a 7 year warrantee as well. You have to drill 4 holes in the frame, and 4 holes in the bed, the bed holes are 2. 5" in diameter, measure twice... . I ordered it online from a place with free delivery, it arrived in two days, they have warehouses all over the US. I have the 4. 10 gears, anything less than 2000 RPMs on the hills requires me to drop out of OD, the 3. 73s may be better as you can go faster in 3rd.