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A couple of questions:
1. What is the Warn Hub Part Number ?

2. Are they fairly easy to replace?


Yes, as long as your 6 hub bolts aren't frozen in place. Mine were so I had my local mechanic do it.

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3. Are there any special tools or pullers needed to get the original vacuum hubs off and Warn hubs on.


No, although a pair of snap ring pliers are helpful.

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4. What do you do with the old vacuum hoses & connections.


Disconnect and tape back the electrical connector to the vacuum soleniod. The vacuum soleniod is located on the fender behind the air filter. The electrical connector comes up from the bottom. Leave all the vacuum lines by the soleniod in place. Remove the vacuum lines in each fender between the fenderwell and the hub. You can leave the vacuum line in the fenderwell open. It does not have to be plugged because no vacuum will be drawn since the soleniod is disconnected. Just cut off the vacuum lines at the bracket on the strut. You MUST plug the vacuum port on the back of the wheel hub. I used a screw with waterproof automotive goop glue.

1998 Sportage - Gone.
2004 Honda Civic Coupe.
2007 Suzuki Grand Vitara - She got it.