You didn't say how you were damaged, so law dogs and lawyers might be premature. Don't assume the worst, but the advice to go in tomorrow might be pretty good. If they are moving out, they are sorting the shop and you can help. At least in locating and loading your parts. It's not professional to drop things on you like this, but they may have an emergency that forced this move. Now, if you get there, ready to prepare your car for removal and they refuse you the car, then getting a trailer and a Deputy would be a good idea. You still might not get your car, but you would have an Official witness.
The new owners want stuff gone, so they have taken over the business. They bought the liabilities of the company that come with the assets, so they are now responsible for your car and for timely notice of a change in the contract (even if it is verbal).
I wouldn't wait too long as the new owners might be thinking a Charger Grille and parts came with the sale.
Tonight, put together all receipts and records you have, then do a rough figure of where you and they might be as far as debits or credits.