After much research, I decided to go with a 5.38 gear set on my jeep since I would be running 37" tires. Many people felt 5.13's were all you need. However, since I will be driving in the mountains extensively as well as pulling my offroad trailer, I felt the possible decrease in fuel economy was worth it. Plus, the gears are the same price. When I went into HCP4x4 they told me that 5.38's would not physically fit inside the Dana 44 housing. I did more reasearch and found out they were wrong. I called them and after they called Yukon and they stood corrected. After driving the jeep with the lift installed, I think I made the right choice. The jeep drives almost the same as stock. Had I gone with 5.13's I think I might have been dissapointed.
