This is pretty cool and explains the door anti-rattle clips! Even if you don't buy it, zoom in and read about it, very interesting:
http://www.ebay.com/itm/1964-Chevy-Van-Original-Service-Bulletin-/322244709889?hash=item4b07480e01:g:XLYAAOSwFe5XxIjJ&vxp=mtr
Read the page about how positioning the door handle vertical will prevent the doors from locking when slamming shut if the handles are horizontal...never heard of that!
http://www.ebay.com/itm/1964-Chevy-Van-Original-Service-Bulletin-/322244709889?hash=item4b07480e01:g:XLYAAOSwFe5XxIjJ&vxp=mtr
Read the page about how positioning the door handle vertical will prevent the doors from locking when slamming shut if the handles are horizontal...never heard of that!