I assume when you write "your stolen vehicle" it is a typo because of your mental angusih, you are not meaning to write that what you owned was a stolen vehicle, that then someone else stole parts from, rather you mean to say that your vehicle was stolen, then someone was caught in the act of dismantlng it for parts.
Hopefully that person is now in the hands of the court system, awaiting trial, and any funds they have being used to pay for legal aid to fight that imprisonment, so what you can recover from their assets might be limited.
You will probably spend more money on lawyer in law suit, than anything you can recover from them, and both their lawyer and your lawyer will make oodles of money off the two of you, but it is worth it to you to get even with this person who inconvenienced you.
Just so you know up front, this is going to cost you more than it has already.
Also, any legislation you manage to help get passed. It is not going to be retroactive, only agaisnt future behavior of this kind.
Car theft is a huge crime. I think our efforts can be better utilized figuring out how to help law enforcement combat this menace.