I have a sx speed JL Rubicon on 35's, just put 5.13 in last week. This is the way it should have come from the factory. It is not a crazy low geared trail only Jeep. If 37's were being considered then 5.38' would be my pick.I am wanting to regear. Some recommend 4.56 others say 4.88. Mostly highway driving with a once a month weekend wheelin trip. Would appreciate some feedback. Spoke to Northridge 4x4 and they recommend Dana/Spicer gears.
Regearing your Jl will be the best money you ever spent.