67-72 Message Board <- for asking and answering questions
67-72 Parts Board <- for selling parts of or whole trucks
The stovebolt page rocks... but there is a higher percentage of '67-'72 truck guys right there... or at least a more active and vocal bunch.
I also recommend chevytalk.com - the 67-72 trucks section. http://www.chevytalk.com
also has a classifieds section...
the stovebotl page here has the 'Swap Meet
click link above' which has parts and whole trucks for sale. http://www.oldchevytruck.com
<- nothign but old chevy/gmc trucks for sale.
When you buy a truck, be sure to check out the 'links, then parts, click on Links, above' section here at the 'bolt.
I hope this helps.