Welcome to the forum Hawssie!
Since you're asking where they can be sourced - member Roger Koop has a FULL set for sale:
http://67-72chevytrucks.com/vboard/s...d.php?t=573918 I've purchased many things from him, always super high quality stuff, but these pics speak for themselves.
Again, welcome, and recommend consider becoming a member - much better to be a member and have all the perks of buying/selling, etc that come with it.
Hope that helps!