2 dana 60 adjustable pinion snubbers

HERE ARE 2 DANA 60 ADJUSTABLE PINION SNUBBERS THAT I PROBABLY WON'T GET A CHANCE TO USE. BOTH IN GOOD CONDITION, THE BLACK ONE IS MISSING THE THREADED LOCKING RING TO KEEP FROM TURNING (should be able to get one that works at a hardware store in pipe section?). SELL RED ONE FOR $45, BLACK ONE FOR $30 PLUS SHIPPING or TRADE FOR .999 SILVER. I ACCEPT PAYPAL OR U.S. POSTAL MONEY ORDERS ONLY. THANKS, STEVE.