would say the trac-loc and gears out of a 4x4 ranger work in our cars? i havent done much reading on this but i think some 4 cly 4x4 came with trac-loc and 3.73's. that is the same thing im wanting to do i dont want 4.10's because i dont want to replace my drive shaft but these 3.08's gotta go. i want to keep some of my top end because a lot of my friends have bikes and we take sorta long trips on the interstate about once a month or so. as it is now we usuley cruse about 110-115 or so most of the time untill we hit traffic or if a friend in his bagged blazer goes we are down to about 75-80.