So to start off, I am new to Jeep building. I have had my JKU for a little over a year and have made small mods to it(Light Bar, Bumper). Now I have bought the 4in Mopar lift kit with Fox reservoir shocks. I am planning on installing this with a set of 35in tires on 17in rims and was wondering if a stock Dana 44(rear)/ Dana 30(front) with a 3.21 gear ratio is strong enough. Ive hear and read mixed feelings. Should I upgrade to 3.73 gears or higher such as 4.10 and 4.56. Looking at charts it seams that a 4.10 and 4.56 are great for moderate trail use which is all the jeep will be doing.