I'm looking at purchasing a new camper that comes with a Pullrite Superglide 15K ISR hitch, but no rails. What's your favorite "industry standard" rail system that custom mounts to a 2012 F250 short bed and also doesn't require drilling extra holes in the frame and can avoid problems with the fuel and DEF tanks?

 

Here is a pic of " industry standard" rails and custom mounting brackets. This would be your cheapest route.

You also have the option of installing a factory under bed system that uses Reese Elite style hitches. Fifth Wheel Installation Kit for 2012 Ford F-250 and F-350 Super Duty - Reese RP30126 Reese Elite Series Under-Bed Gooseneck Trailer Hitch for Ford Super Duty - 25,000 lbs Reese Gooseneck RP30138-26 One has a goose neck ( factory) and one just the hitch but is cheaper. If you want to use hitch provided you can get an adaptor. http://www.etrailer.com/Accessories-...56.html:-drink