My 06 Rubicon, is set up to where the OD turns off when I put it in gear.
Still has the 4.10 gears and TC, 33 12.50 15, just can switch the overdrive on and have run 85-90 by my GPS.
Granted the JK will run 70 with stock 3.73 gears and 285 75 16's but at that speed neither of them get good...