Add the Icon K63115 4-5.5" Stage 5 Coilover Conversion System from GAP to your 2005-2007 Ford F-250/350 6.0L Powerstroke 4WD. Designed to provide a height-adjustable option to the extremely popular Icon Vehicle Dynamics 4.5" Ford Super Duty Suspension Systems, these coilover conversions provide excellent on-road ride quality and off-road performance while at the same time allowing for end-user ride height adjustability. Features: Bolt-In System Fits In OE Coil Bucket Location FK Rod End Bearings For Extended Longevity And Minimal Deflection Ride Height Adjustable Coilovers (4-5.5") Increased Wheel Travel And Ride Quality Over Stock Decreased Body Roll And Improved On And Off-Road Ride Dynamics Vehicle-Specific Shock Valving Provides Unparalleled Ride Quality And Control Shocks Are Fully Rebuildable And Re-valvable Coilover Conversion Allows For Addition Of Secondary Shock Corrosion Resistant CAD Plated Coilover Shock Body With 7/8" Shaft Eibach Coil Springs Guaranteed For Life Against Sagging Or Breakage Rear Shocks Feature One-Piece Impact Extruded Aluminum Cylinders For Excellent Corrosion Resistance And Consistent Finish Notes: OEM Wheels & Tires Fitment: Yes Recommended Aftermarket Wheels: Icon Alloys | 17x8.5" W/ 5.00" Backspace / 6mm Offset Recommended Aftermarket Wheels: Icon Alloys | 18x9" W/ 5.25" Backspace / 6mm Offset Recommended Aftermarket Wheels: Icon Alloys | 20x9" W/ 5.25" Backspace / 6mm Offset Recommended Aftermarket Tires: 35" X 12.50" (Larger Tires May Fit But Fender Trimming And Modifications Will Be Required.) Application Note #6: Springs Are Rated For Diesel Engines Only. Application Note #55: Shocks Are Fully Serviceable. Coilover Heights Indicated Are For A Stock Equipped Vehicle. Application Note #88: Removal Of The Coil Centering Cup In Factory Coil Bucket Required For Installation. Note: Installation Manuals:I164500 Installation ManualI37701CP Installation ManualI61721C Installation ManualI64035 Installation ManualI65000 Installation Manual