I have the OEM ring and pinion set from the Ford differential on the trike for sale. ~12k miles in a trike, so virtually unused. Including the cross pin, used pinion bearings, new inner axle bearings, ring gear bolts and shims, so it's close to the full kit. You'll need a new crush ring for setting pinion preload and the forward end pinion nut. I'll be putting it on ebay with a starting bid of $100. If anyone here wants them I'll sell for $100 + ~$15 for shipping usps. PM me if interested, thanks.