We did a friends 16 1500 Express 4x4 using Bilstein 5100 struts set at 2.1 inches. Nothing else was needed. We did add the same series rear shocks and ride seems fine.

I just got a new 17 1500 Express quad cab 4x4 and will probably do the same. Mine has the 20 inch clad wheels and I am going to 17 inch wheels with Toyos off a Ram Rebel.

77 Macho Power Wagon LWB factory 440 70 Coronet 440 N code 3 speed