Man,are you clairvoyant or what!? I just put a front hitch on my dually yesterday (Saturday).Didn't want to chance anything on the rear of the fiver except what's suppose to be there! I have an '08 Ram.It's a Curt model 31017.I think it will take 400lbs tongue weight,4500 towing weight and 9000lbs straight pull weight.I am guessing on those,they do have the specs on them on the website.Got it from Autoanything. Cost was $165.00 No shipping cost. My only major gripe was drilling 2 1 1/8 in. holes in the frame,OUCH!!.If your mechanically inclined and have all the tools you can install it in an hour.Got to go,getting ready to use it as we speak! Hope this helps.
Steve & Sue
2011 Crusader 320RLT
2008 Dodge Ram 3500 (CTD) DRW 4x4