No one has probably done it as it's not worth the time and effort. By the time you mess around (ignoring any pitfalls of just welding in patches, and grinding it all back flush and trying to get a nice finish) you probably could have spent that time earning some $$ and got some steels widened properly.
Might be worth the effort to you though, so go nuts. If you care about the legals might want to look into that first as I doubt it would be legal.