Hello Morris, The picture of the car with the windshield with out support on top is a Shell Valley Cheetah. (Their version of a Cheetah) I was using the picture to point out some differences between their car and mine. I don't know what windshield they use.
For my car I'm using a MGB windshield and frame. I like the look, the frames are available for reasonable money and new glass is available for under $100.
Here's a picture of a mock up that I did to see how my work was coming along. My son in the car is 6'2". The seat can be lowered by 2 more inches.