I am looking for which hydraulic transmission has the tallest final drive, and that will work with the B-series motor. I am swapping the B-series motor into the classic Mini and running a 175/60R13 tire. My problem is with that small of a tire the gearing is way to low in with the type R trannies we have been getting with the motors. If someone could be so kind to tell me the code for the transmission and what cars that they were available in. Thanks