I have a "new" Richmond 3.73 ring and pinion for sale. I had it at the shop and test fitted before going a different route. (Basically the shop fitted them, test drove it, put it back up to make an adjustment , charged me additional for a different set of gears, didn't tell me, then installed those). It was a real shady deal but now I no longer need the Richmond Set. Asking $100 plus shipping.