WillieB.
Nobody can tell if you need a camber kit until you get your alignment done. If it can be adjusted within specs without the kit, you don't need it, If it can't you do. It does appear that more Sport Trac's need them than don't?
That does not account for shady alignment shops that may just claim you need them regardless if you do or not. Or some shop that may charge you for them, and not install them.
These camber adjusters one of those parts that cost about $25-$30 wholesale but they charge you $80-$120 or more with installation. Ford could have installed them at the factory assembly line for about $5-$10 per vehicle and it would never be an issue.
...Rich