For sale is a very good Winters #8536 quick change gear set with 17 and 25 teeth.  This is set 36 and in a 4.11 ring and pinion rear end this yields a final ratio of 6.06 and in a 4.86 ring and pinion rear this yields a final ratio of 7.14.  This is a 10 spline gear and very good condition.  Thanks for looking and as always I combine shipping when possible.