I have an '07 with a Husky Jack. From the center of the post to propane tank cover its about 3" leaves about 1/4" or so clearance.
Might want to see if their website has dimensions on it.
The Jack works really well. Quieter and just does its job.
2005 Dodge Ram 2500 5.9L 6 Speed
16" Michelins, Hi Spec Wheels, Max Brake, Carslile Actuator, Equal-i-zer, Dill TPMS. Campfire cook.