Ditto on the Ebrake. The next thing would be the aux. tank. You have no idea how it will change your buying and travel habits. Getting ready to upgrade from my 36 gal to a 90 gal.
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2001 2500 QC, ETH/DEE,4:10s, LSD, EZ with elbow(25PSI) Boost/Pyro Guages, 4" Turbo back, BD Brake,Mag-Hytec Cover, Kleen Wheels, Energy Release, 70 gal. fuel, 20K Reese. 22,000 miles on 12/19/00 (RV Dealer)