When looking at my Autoloc kit and my doors, from a '51, they actually fit almost perfectly in the stock location. Don't get me wrong here, I will still have some cutting and welding of the installation kit but I will only need to use a small amount of the installation plate. The locks themselves clear the window channel just fine.
Originally I installed the latches in my '53 doors just to test the installation process. Good thing I did that on my crappy doors first because I learned a lot but this is very do able.
I have the
large, locking, double bear claw latches. (the kind with two latches, one on bottom and one on top) Here is a link to the units I have:
http://www.thehoffmangroup.com/autol...c=bearclawdoor
Here is a link to a how-to on these units, but not into our trucks:
http://files.thehoffmangroup.com/art...lawinstall.pdf
I will try and get some pics of my install and I move forward... but it might be a week or more because I am going to get my knee scoped on Wednesday!