Fryer,
Does it have to be another 'Burb? What about a crew cab 2500? If for just a "covered trunk" could add a truck cap/topper. Just a thought!
If a 1500, as mentioned verify it has the tow package with the 3.42 gearing if a 6spd trans. If a 2500 try to find a newer one that also had the 6spd trans. The difference between the 4spd and 6spd trans is crazy!!! A 6spd/3.42 actually had better gearing than the 4spd/4.10 combo does.
Know that as mentioned the newer 'Burb has an integrated receiver hitch that is limited to 1000lbs tw.
Good luck in your search!!!