Just talked to redhead rebuilder in seattle and i have the choice of original 6 turn $400 or for $200 more to change to the 4 turn . They use new roller balls as part of the rebuild to get close to new . with only occasional off road planned im not sure of which way to go or if i should go for a nissan type box as a cheaper way to go but still a used box.. The question is how has the fast ratio performed for overall use on and off road. thanks for your help