Awesome.
Brainstorm: Someone recently posted a picture of a cropped top 912. It had a Speedster windshield, so I imagine the head room was nothing to brag about, or you had to sit on the floor boards......................................What if the company which made that glass top of yours, made a lower version?
I think you would have to switch to plexi-glass/acrylic side windows, but they are lighter anyway.
You would have a Speedster, cropped Coupe, Targa.