jpares89 wrote:
So those two are in the front of the back rail. The other two go to nothing but the bed sheet metal. Now the front rail had the holes drilled in the frame and the L brackets matched up to the rear of the front bracket and bolted no problem.
This is exactly how it should be. One set of bolts will only go thru the sheet metal to provide stability to keep the rail from flipping.
Look at any of these installations - regardless of vehicle...in particular Figure 2. It shows the L bracket under 1 set of holes on each (Row 1 & 3) end and the other row of holes just thru the sheet metal.
http://www.hitchpro.net/application/support/instructions/N30035.pdf