3.73 gears, trueflow filter and a flexalite efan. I run up to big bear which is a 1 hour up the mountain 8k' climb. it does just fine. I have a full size spare and its mounted via LOD extreme bumper.
i dont bother using 4high on any steep uphill. I definatly have lag on the hills but with my 3seed auto and 3.73s its ok. (its a jeep not a race car)
my wheels are from crager i think (got them used for 80bucks) and i believe its a 3.75back spaceing
I have zero complaints.
the LOD bummper is MUCH cheaper then ou think check them out and they are nce and Heavy duty