is it legal and how is the easiest way to remove the warning labels of both visors?

 

here you go!

https://mustangforums.com/m_2142827/...tm.htm#2142950

 

try replacing it with this...
http://www.americanmuscle.com/aiwapade.html

I don't think the airbag police are gonna come get you.

 

It is legal in the sense that there isn't any laws that says that me and you are comitting a crime by removing those stupid things.
The manufacturer has to put them on though, that's the law for them.

As far as removing these... Goo off works good and they make humoristic stickers that glue on top of them also.
Like: "This seat will eject if you smoke in my car", "This car has dual airbags" (with a pic of a woman breasts) etc...

Oops, 300GT beat me to it...