For those of you I spoke with tonight, I think I found the method of install for my belts. The Vans all have the access panel behind the front door which is just wasted air.

This guy did a pretty good step by step on it here:

http://vintage-vans.forumotion.com/t...ght=Seat+Belts

Not sure if it is useful for the cars but it looked nice and clean so I thought I would share.