Sorry for the delay. Most of the time I'm on an Ipod so I don't always notice the notice alerts. To your question, they can be swapped, but I'm not sure it's worth it. One, your computer might be upset by the sudden absence of the transfer case, but other than tripping the check engine light, no big deal. Two, the rear driveshaft is typically a different length between 2 and 4wd. Three, because of the transfer case, the main crossmember mount is most likely different as well. Bring all the goodies and it'll swap, but just unit for unit, no. The guts will swap, so you could change out the output shaft and tailshaft housing. That requires pretty much tearing them both down. Only difference is the cost.