He doesn't have a spindle to exchange.I found this…
Ford Raptor Gusseted and Reinforced Spindle Exchange Program - Pair - TSW Offroad
Ford Raptor Upgraded Gusseted Spindles / Knuckles Exchange programtswoffroad.com
Rockauto has Motorcraft spinsldes MEF116 is FR and MEF118 is FL. $386 and $409
2010 FORD F-150 6.2L V8 Knuckle | RockAuto
RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. Easy to use parts catalog.
www.rockauto.com
Did you not bother to check Rockauto before your posting spree?