The 84-86 Trooper parts manual shows no manual hub option. If you can find some, they would probably come from a pickup. I can tell you that the 79-82 LUV 4x4 hubs do not fit, the outer body of the locking hub is slightly smaller and so is the bolt pattern to the hub/rotor. 81-82 LUVs (and Pups) were much closer to the setup used on the 84-86 Troops, but not quite. The hub is one part that is the same 79-82. Pups after that, well I don't know for sure. I haven't managed to snag a pickup parts manual yet. I'd guess that 84-86 PUPs would have them, I found a pic of an 86 over at www.isuzupup.com with manual hubs, but its hard to say if they are the smaller old style or would fit the 86 Troop.