I dont know the about Sabre but I know my truck sits high. With a pullrite 18,000 which is physically may be the same height as a 16,000 the hitch plate sits one inch below the bed rails and that's with the optional low profile feet.
The pullrite capture plate requires the truck and 5er to be within 10 degrees of straight when hitching. CHECK for differences in the 18,000 and 16,000 I dont know exactly.
I have an older 5er and went to 16 inch tires, flipped the axles and it's now level. (about 7 1/2 in) SO when you look at the Sabre level and measure from the bottom of the pin plate to the ground and measure from the ground up to one inch below the ram bed rail you will know what lift the 5er needs.
I just measured mine. It's 55 1/2 from the ground to the hitch plate. Mine is an 18,000
