[70CitrusZ]

If Arnies story is true, then that ebay seller is openly engaging in a fraudulent act.
As such, he should be dealt with as a criminal.
I hope he realises that in jail he can't spend his stolen money even if he could keep it.

Even IF he did have a mechanics lien it would be for the truck, and to have that he would need a signed (by arnie) workorder for the car or the truck.
Even then he is only allowed to sell it for what he is owed for work done in his shop.

If I were Arnie, I would simply report it stolen, and let the authorities rain on bubba's parade.