As far as doors > don't laugh as it IS in the plan for my car at least

As long as the structure integrity of the door sstays the impact will be fine. I will make them out of kevlar if anything for these particular parts. Although carbon would be fijne also.
You will not punch a hole nor break it with a 2 x 4 as I had hit it myself for testing. Good luck on that

The weigh savings are huge. Stock door weighs 79 ppounds with window but no door panel so lets say just an even 80. 160 pounds would be in the range of a tenth and almost 2. To most people it would make a difference. Some people have their Supras for diffreent reasons. Me? I want mine to look somewhat stock and have huge power and at the same time be lighter.
Hoods? They will shatter if made in carbon but are fine by most insurnace companies. The new BMW comes with a carbon hood from the factory. If in kevlar, the hood will stay intack.
Door panels on the other hand we will make for my car. Other parts just give me a call as most of you know my number or email.
Nothing is a stupid question or suggestion.
I am seriously wanting to make doors but is not in the schedule at ths time.
Duane