Okay, so I felt around some more this evening and found two possible locations. For both I can feel what seems like a bracket under the headliner plus a hole. #1 is a hard guess, #2 was easy to find.
I am thinking that the #1 location makes more sense but I am using my best guess there is a threaded hole there, hard to tell with the headliner pulled tight. #2 seems much to far toward the rear of the car but what do I know...
So which one is it? And what may the other hole used for?
Thanks for the help folks!
Also, anyone that has a good lead on the bolts used that would be great. When I helped my buddy strip an a body they looks like shoulder bolts with thin heads. Not something that my local hardware store is going to stock.