These are what you need for the rear, the fronts have holes of course, I just sold a nice set a few months ago. Give this guy on Ebay a call and see if he has fronts.
Be careful, some pictured in this thread look like 73 and up or 76 and up styles. They are very similar to 69-72
http://cgi.ebay.com/ebaymotors/CHEVR...Q5fAccessories