Rambox
This was a HUGE debate when ordering my DRV. I ordered it with 2 inch risers as better to have to much clearance then not enough.
I understand your concern....... Ordering something that costs a lot of money with no turning back is a little spooky.
The problem I had was I REALLY wanted the new Ram 1500 as soon as I heard it had a diesel. ( With Rambox I just had to have ) this is where things are getting a little tricky.
The truck was delivery to the dealer today 4/20/2015
And the big problem is my camper its a 28RKBS Wildcat by Forest River and it has a long pin box and the pin box is so long it will hit the Ram Box with a short turn.
So now the trick will be to get the pin box short enough to keep the pivot within the Rambox and still keep the camper far enough away from the truck window.
I did order the Long box which is still only 6'4"........... I have the B&W turn over hitch, and the Anderson ultimate aluminum hitch to go on top of the turn over that has 4.5 inch offset to the rear.
I scheduled to be at MORryde 5/11/2015 for the full independent suspension with disk brakes and I am praying they can build me a pin box site on seem.
It's fun but I am a little nervous !!
My 3500 Ram Long box measures 60 inches form the center of the pin to the rear bumper edge.
The new 1500 measures 50 inches
So that means the box on the 1500 should be about 8 inches shorter from the pin to front of the box.
All I can say is.......... It's a start.