1999 Saturn SL1 Out side review mirror-

I don't know of any other glass that fits ur best bet is to go to the dealer I don't think there that expensive let's just hope it comes with the backing some only came as the glass and there tricky to replace them.U have to tape the glass off break it with a hammer and peel it out use clear silcone to put the new one in and tape it in place till the silcone dries. Hope this helps. Also donations and feedback greatly appreachiated.
Louie