[Washuu]

Car modders toss catalytic converters all the time too in states without emissions enforcement. It's just not a problem that is handled.

At one point I was working on a startup idea that would produce a piece of electronics for helping with drive train swaps. However, I realized that it would make it very easy to ignore all emission and safety requirements despite my efforts to prevent that. So I dropped the entire idea and moved on with my life. I don't want to unintentionally help other people make the planet worse.(But I also wanted people to reuse/recycle car parts more effectively. Oh well.)