to the board!
If you don't have a copy of LMC's (
www.lmctruck.com) catalog, you should get one. Download it to your desktop and you'll have it for reference. They have decent line drawings that remind me of the Mitchell Crash Book drawings.
What about a copy of Chilton's or Haynes manuals? I prefer the Haynes, but Chilton's isn't bad.
I guess the next question is why you have to change it....but I assume an accident was the answer. There is a passenger side air bag eliminator kit available from several vendors.
But, one more source for parts is
www.latemodelrestoration.com.