ReadyLift 69-2516TP 2.5''F/1''R Lift Kit with 5'' Blocks (Ford Super Duty F250/F350/F450 4WD, 1-Pc Drive Shaft Only, 2008-2010), 1 Pack Max Lift 2.5" Front/1.0" Rear-Max Tire: 37" 2008-2010 Ford F250/F350/F450 4 wheel drive Includes 5" rear block. For use with trucks with one-piece drive shaft