Scales to get real weights are always the best idea but I can tell you this, airbags with an onboard air compressor will be one of the best upgrades for your truck. Like was stated before, the rear will sag and the ride can get bouncy. The bags will make life easier and more comfortable going across country.
2014 V-Cross Platinum 365VTSB (Bought Labor Day 2014)
TV: 2016 GMC 3500 Denali - Stock for now.
Days Camped 2015: 17
Days Camped 2016: 28 so far