A body louvers

74'
I've ben watching this thread for a while now and I have to say for someone who has never done this before you are making great strides.
May I suggest a few things.
If you put a central crease in the pieces you effectively cut the span in half. You also should try rolling and flattening the trailing edge which will stiffen the piece.
May I ask if they could be had with or without the filler piece. The Missile has a third tail/stop light in that location.
Also you should as cuda chick suggested offer them finished and unfinished price adjusted. I would want one that I could have the black metal flake shot on.
Over all you are doing a great job and product development is tough.
The only fit issue that catches my eye is the top corners, they should be a little tighter.
Keep it up
Andrew