I'm sorry.......did I understand you correctly?
Did you just tell the world that East Coast ATV buys stolen parts from shady people, then resells them to people? Possibly in the form of crate motors? But somehow since he was familiar with you he returned your stolen items and threw in fresh tires to smooth things over, you now think he wears a cap and is your local superhero?
Want to know why professional shops DON'T DEAL IN USED PARTS? To avoid knowingly or unknowingly laundering stolen parts!