I ran across this site and they seem to carry alot of stuff that dealers,parts stores do not carry.They seems to carry alot of the second gen stuff.Just check both areas mechanical and collision. Http://www.GM--partscenter.com
Looks like they even carry badges if you're wanting to do a restoration. Epic fail for not having any 1982 J2000 parts though.
My car was made with wrenches, Not chopsticks.