He has had your car continuously, since 2021? That's ridiculous. I'd do whatever it takes to recover the car ASAP, regardless of the transmission situation and then handle the legality of what's left beyond that. Who knows what's happening to the car.
Droptopp makes some great points. Even if you're in Memphis, I would get your documentation together and take some days off work and get up there to the shop in-person. Walk in the front door. It doesn't have to be a violent "tough guy" thing but it's a lot easier to ignore texts and phone calls than it is someone standing in front of you.
The car is yours and you have a right to it. It's a six-figure asset sitting there and it seems unlikely that the car is going to be finished in a satisfactory way while there anyway.
^ditto, you brought us along on this journey to this point. Explain how you finally got the car back after 2 years. Is there a VIN scraped trans in the car?
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