Sorry to hear...I am in the same boat. All of the Bar and Restaurant closures shut down my business as well being I am in the Coin Op business. I install Touch Tune jukeboxes, pool tables, video games, and sell Pull Tabs to these establishments. Luckily my Wife is still employed. I really do not want to accept a stimulus check so hopefully this doesn't last too long.
I say keep the car if you can...you have put a lot of effort into making it what it is and it sounds like you have some unfinished business with it. If I recall you haven't been able to get clean run yet on the new setup. So you got to at least get that PB with the new setup before moving on!!
Good luck and be safe!