[Stefano]

That which is allowed by law and that which people may or may not do can be two completely different situations.

I have seen the rust repair of a dash as you mention handled by "supervision" and did not require a retitle or retag and all other Vins were also verified.

FYI, there was and is an ongoing "Sting" opperation where people are/were buying advertised illegal items. Some of these unsuspecting buyers have been arrested and convicted.

It is not Illegal however to purchase, change, make up Trim tags and info nor to posess and use the correct Rivets used on GM trim tags.