Installed my Timbrens on my 2011 Dodge RAM 3500DRW LB and connected up to the Monty, just for reference, here is a picture from before I installed the Timbrens at a school yard:
And here is a picture of after install at the same school yard:
To me, the truck looks like it squats more with the Timbrens installed, but that cant be right.
I do have 88 gallons of fuel, at 7.15# per gallon = 629#.
I do not have the spacer installed in the Timbrens.
The ground was a little downhill, but the bed rail was a little uphill: