I have a couple questions about some weight reduction pieces for a drag crx.

How much weight savings is there in a 1 piece crx front end over conventional normal front end+fenders+carbon fiber hood? Is most of the reasons for a 1-piece in the fact that you can get rid of the front suppport and the hood weight and have more room?
Also, how much less do fiberglass doors weigh than regular 91' SRS doors? can you still use regular glass and remote door locks with them? lastly, how much do you save with the lexan rear kit for FAL? does lexan scratch real easy?

p.s I did a search but still had a few questions

thanks in advance.