79-82 LUV 4x4 hubs will not even fit an 84-86(7) Trooper with an 8 bolt front end. Even though the spline count is right, the hubs have different outer diameter and bolt pattern. I was hoping I could use my stockpile of parts LUVs to get manual hubs on my 86 Trooper, but found it was a no go.
I don't have an 81-82 LUV to check, but my parts book shows the hub parts to be the same as 79-80 hubs that I've physically tried.