WOW, just brought our composites division in house, and things are moving sooooo much faster now. I had originally prototyped this conversion a couple of years ago ( you may remember the post with a black SRT10 that Chris Marshal posted ). And now after moving all our molds in house on thursday last week we got to the business end of this conversion and got her done on Friday. There are still a few detail pieces to tweak but so far so good.
Once the incorporated roll bar is installed ( 1hr ) the change over from coupe to convert and back gain takes about an hour with 2 people.
What I did here is replace the entire trunk with a hatch back that bolts up to a roll bar that also supports the roof. The roof panel latches to the windshield just like the convertible top does. Rear window ( hatch ) has rear defrost.
The convertible top is still in the car and the car can convert right back in less than an hour just by removing the hatch (4 bolts ) and then the roof ( 4 bolts and a latch ) then the stock trunk gets bolted back on and viola back to a vert. Here are some pics...