Hey George,

There may be differences between 40 and 41 trucks, but here are a few images from my 41 GI.

[img]http://www.surfacezero.com/g503/data/3764/2013-10-10_13_19_24.jpg[/img]

[img]http://www.surfacezero.com/g503/data/3764/medium/2013-02-18_18_29_28.jpg[/img]

[img]http://www.surfacezero.com/g503/data/3764/medium/2013-02-18_18_31_33.jpg[/img]

On a 41, the window regulator has two nylon (I think), rollers that fit in the track at the window frame bottom. The rollers are kept in place by a very slight indentation in the track.

Hope this helps,

Paul


1941 Chevy 1 1/2-ton WW2 4x4 dump truck
In the Stovebolt Gallery
Lots more pictures