Can't belive that u joint is discontinued.It's still in use in light duty GM pick-ups w/a steel driveshaft.Maybe the number has changed.It any case, it is a inside snap ring style;2-3011 Neapco or 5-3147x Spicer is greaseable;2 -0795 is the sealed high performance stronger version.You may have to find a driveline shop to buy the better quality.If you can't find them local,PM me -I have all in stock.