4WD Not engaging, fr. driveshaft is spinning

[Josh40601]

If you convert your hubs from auto to manual (at least on a 89-97) you have to buy either the conversion kit or the lock ring nut kit for manual hubs. If you do not, you WILL bust those hubs

 

[MountainMike]

I think the Dana 35 IFS hubs are different. The Warn hubs require the conversion kit because they are "top-hat" hubs but as far as I've been told the AVM hubs pop on. My only issue is what to do with vacuum likes.

 

[Josh40601]

Im not sure on the IFS trucks. As far as the vaccum lines go, just plug them.