Petersen's just reran that pro-trac ad in their newest issue. They also printed the Hickey sidewinder winch ad where the 69-72 blazer is hanging from a tree by the winch cable. I've also found a pro-trac ad.
And I still haven't found the truck ad I was looking for.
I also see this thread has had over 4000 views now. Tim I'm hoping it's not just you and I doing the searching.