I have a gas engine, but I think the springs are the same. I have the plow package, but my truck still sags too much with the plow on (fisher XV 9.5'). Does anyone know the spring code for the f550 with plow prep as well as the 450 with plow prep? I know with my old 05 it was "AA" and "BB". Has it changed? Thanks, Nick.
2016 F350 crew cab short bed srw.
2016 F350 crew cab short bed srw.