67 Barracuda Shoulder Belt Location

I'm planning on installing shoulder belts in my 67, since it didn't originally have them there are no mounting points on the car. Where in the roof rail would be the correct location to weld in a mount for the belt?

I put it about an inch rearward of where the door window/rear quarter window meet (on my 67 Barracuda). Based on the location of my 73 Swinger. If you want to see some pics of where and how I put in the anchor points go to

http://www.forabodiesonly.com/mopar/showthread.php?t=56265

Thanks for the link. Saved to my favs for now. I'm just planning on non retract style for now, but I can always go back later and put a mount in the rocker for a retract style if I get sick of that style.