funny you should say that....Im most likely moving to NC sometime this year
Doing Lexan on CF t-tops wouldn't be too hard but it would just drive the cost up considerably if you use decent grade polycarbonate (which you should, cause you get what you pay for) and have it cut properly.... IIRC, the price I was expecting to hit was between $275-350 per set for a production run of 20 sets...about $100-150 more for lexan, but I really didn't want to bother with that.
I had planned to make them so you could re-use your latch/lock mechanisms, etc..
I'm not too sure how the one piece idea will work/look over the t-bar and how it will atache to both sides and the middle...you will either have to complicate teh attachment points so when you undo one side the other one doesnt bind as well as reinforce the span of the structure and possibly make some ind of provision for the center are to latch or hold onto the tbar to avoid any flutter or vibration issues...the sealing at that point would be more complex too... unless you intended to cut out the t-bar, personally i wouldnt though even though my NX is caged lol
The weight savings would be minimal inall honesty, but if you have the hood in hatch it would look rediculously awesome...alos it was supposed to simultaneously serve as a solution for leaky seals...if you didnt like th CF look you could paint them... the seals is where I ran into the most hurdles though :/ actually having the molds/units made from CF is a walk in the park...