Doesn't seem legal to sell fender tag etc

I know in certain states, that will get you put away. Classic chop shop tactic known as the tag job.

Exactly! Which is why it’s illegal to sell VIN tags.

But, you can have a totaled car rebuilt, even if that rebuild involves replacing everything other than the VIN and stamps. Like I said, there is a legal process for that with the DMV and inspections. Depending on the state you could end up with a salvage or repair title. But, it would still be legally titled as a ‘70 Challenger, instead of car that looks like a ‘70 Challenger that’s titled a 2022 special construction and subject to a whole different set of rules.

This is shady already because the stuff is for sale. But if the seller was actually the legal owner of the car selling his shrine for a car that he totaled in high school or something and there’s some documentation of that, you might be able to claw it back into a gray enough area to get a legal title.

The much more likely re-body scenario involves multiple felonies of course.