Guys, my son has a 2001 TJ 4.0, 60th anniversary edition with an auto tranny. The question is, could this thing have a 4 speed auto instead of the 3 speed (32RH I think)? When I drive it, it seems to shift into overdrive around 45 mph. We have 3.07 gears still and 33" BFG A/T's and run decent on the interstate at 65 or 70 mph. I'm just trying to figure out what exactly we have for possible regearing if necessary. Thanks again. How can you tell by looking at the tranny if it is a 3 or 4 speed auto?