Ok... I've looked through some threads and a few shops that carry CF. & Fiberglass hatches and want to know how they work. I know they save a great deal of weight, but how is the fitment and install.

Do you need latches to hold it down?
Do all the pain seal, etc still work or will it leak when it rains?

And can you mount a spoil onto them, with out it ripping of under high speeds?

I know pettitracing's hatch says that you need to mount a spoiler to a sturdy part of the chassis. Any suggestions, or insight will help. Thanks.