While a basic spacer leveling kit may get it rid of your Super Duty's rake, they don't add an ounce of performance to your 2008-2010 F250 or F350. That's where spring and coilover leveling kits come into play. These systems include new, taller springs that are usually paired with performance shocks so that your Super Duty gets a leveled look and improved suspension performance both on and off the road. Coilover conversions offer up awesome off-road handling and performance, while leveling out your Super Duty. Ford Super Duty Fitments: 2008, 2009, 2010 Ford F250 & F350 6.4L Submodel Fitments: FX4, King Ranch, Platinum, Lariat, XLT, XL Some Exceptions apply, please see individual product pages for specific fitments.