Started with the passenger side glass and some 12mm square alloy tube. After some bending, twisting, some head scratching, more twisting and more bending, we have the first part of a new window frame.

Made up a second piece to complete the frame, then had to work out how to mount them to the existing door.

I drilled and tapped a piece of plate, welded that to the door, then the alloy bolts onto that. Makes it nice and strong, put still light.
Then needed to work out the same thing for the front mount.

The pieces of the frame welded up, and mounted to the car.

Next job is to make the Lexan window, then bolt that to the frame.