Fitting door mirrors!

[RetroMat]

I'm in the process of finishing the restoration of my works Austin 7cwt van. I'm looking to fit some door mirrors. The van never had them from new but I would like the van to be a little more usable
I've purchased a pair of these:
https://www.angclassiccarparts.co.uk/pr ... legro-maxi
My question is where should they go! Before I start drilling Did BL ever release a guide where on the door they should be fitted? I've been looking at various pictures of marinas and the door mirrors seem to move around the area of the 1/4 light.

[locost_bryan]

This appears to be an official Mk2 publicity photo, showing what I assume to be the official factory position for your type of door mirror.

[RetroMat]

Thanks! Well using various images I marked a position and went for it!

[locost_bryan]

I had a similar type of mirror on a Marina back in the 80s, and the little grub screws that held the "pedestal" to the door mount kept vibrating loose, and needed a dab of Loctite. Not sure if your mirrors use the same system?