Specialty Products Company (SPC) 23233 - 3/4 degrees 1-1/2 and 2 Ton Sleeves are camber/caster sleeves that correct alignment problems on these F450 and F550 Super Duty trucks. RWD/4WD: 2005 and up F450, F550 Coil Springs; Chevy/GMC 4WD; 2005 and up Kodiak K4500, Topkick K5500.