* Any 1980-96 F150 to be lifted 1.5"-2" will have potential alignment problems unless the factory shims are at or near zero degrees. Verify what's on your truck prior to purchase. Otherwise, a minimum of 4" of lift will be required in order to achieve correct alignment. Oversized caster/camber shims are required. No lift will be achieved on vehicles with big block engines.* Oversized caster/camber shims are required