Napa part number PUJ 333. It lists for $69.99 as of the date of my post. Below is the specks and other part numbers from the Napa Website. I like the note about what it fits. "Many"
Fitment Dimension : 5.31" Between Plates
Fits Bearing Dimension : Diameter 1.875"
Grease Fitting Location : Between Trunions
Original Equipment Series : Spicer 1610
Replaces OEM Name & # : Spicer 5116X, 516X, 52792X, 5279X
U-Joint Bearing Type : Round w/ Welded Plate
Contents : 1 U-Joint, 8 Cap Screws, 4 Lock Plates, 2 Grease Fittings
Vehicles : Many