74 K5 door swap. Use new or old glass?

[Malathion]

Had to get new doors and I decided to go with used newer model doors rather than brand new 73-75 doors. The doors have been cut to be convertible and to keep the original look and interior panels, I've welded up most of the additional holes on the inside panel that the newer doors have. Sigh. The things I do to save a few bucks.

Aside from the holes, the biggest difference on the newer doors is glass thickness with the 74 glass being almost twice as thick. I can close the doors now and they seal just fine so I would imagine that I wouldn't have an issue long term as long as the doors are adjusted properly. Just want to make sure though.

The old and new doors both had manual regulators but I would prefer to use the newer regulators and glass pieces since they are in better shape and the glass is not as scratched. The two pieces can't be swapped/miss matched as the rollers are larger on the newer glass. Would also be using the felt channels from the newer doors. Mostly concerned about window glass strength since there is no door frame.

Thoughts?

Thanks.

 

[blazer74]

Windows are the same. Sash has an extra section that rides in the aft track to keep them from flopping on the 73-75 verts.
I'm using cut 87 doors and have no issues with the windows.
I still have but didn't use the original windows.

 

[4xcrazy]

They are the same shape, but there is a year where they thinned out the glass. I believe it's older trucks have a thicker window than the newer ones.

 

[Malathion]

Thanks guys. I'll stick with the newer parts as they are in better condition.