conv means conventional; ie, not 4x4. Ratios exclusive to the 4x4 models will be marked FWD; those not available on 4x4s will be marked conv. Ratios available on both models with not have a note at all. I don't have access to my literature at the moment, but several ratios were undoubtedly available for your model, and Stude probably would have built almost anything to special order. Some were also available on the 3E13s as well. There may also have been a high (low numerical) ratio only available on the V8s.
Posted on Apr 20, 2012, 5:37 PM from IP address 126.96.36.199