question for you , do you drive your jeep on the street more then 4-wheelin if so you want to go with 4.56 not 4.88 ,i have 4.88 i had to switch them out because i was sucking more fuel down ,when i fill up a full tank of gas i wwould drive about 68 to 70 miles on the highwayon only a querter of tank but when i changed to the 4.56 i went down 300 rpm and saved money on fuel went back to stock with 35 inch tires and so now im getting 97.3 miles on a quarter tank