Joe Levy [2K CPR SLT 5.9L 3.92 PT4WD]
jlevy2@nycap.rr.com
Those ratings are total extra weight you add, including passengers and gear.
What are you planning on towing? Rule of thumb is that the actual weight of the trailer (loaded with gear) will be about 10% higher.
Pete Cartier had a nice summary of tow ratings in the 1st Quarter 2000 E-zine. If you are a member, go to the e-zine archives and take a look.