its impossible to shape glass like that, not to mention a sunroof with a big *** hump in the middle wouldnt be retractable. you could make it out of lexan or plexi, but it would be the pop up type.

t-tops are too much work, lots of cutting, tweaking, etc. plus you have to find someone to be the first victim and be ready to order them a new roof skin or possibly a new car car depending on how bad it goes