Hey guys, I have 3 general questions before I start my project.
I want to build custom door panel enclosures for my 99 Alero. First of all, I know you all are going to say "put them things in your kick panels instead," but for a multitude of reasons (including the fact that I already ripped off my part of my door) I am going to go with door panel enclosures. My next car will be kick panels almost for sure.
1.) Short strand vs. long strand fiberglass:
It is my first time using fiberglass for anything and I have no idea what to expect so I bought a small can (1 kg) of short strand Bondo-Glass fiberglass to experiment with. Should I go for the long strand version (for greater strength) or will short strand suffice?
2.) Will 9 litres be enough space for 6.5" components:
I plan on making a total sealed enclosure, but I can only get around 9 litres of total volume from my calculations. If kick panel enclosures are supposed to be so great, then how in the world do they do it with only maybe a litre or so of internal enclosure volume? I haven't bought the speakers yet, but am looking at a few different ones right now. Either way, similar specs on all of them call for around 15 - 20 litres internal volume for sealed enclosure.
3.) How the heck to fasten it to the door:
See picture below. I have no idea how I'm gonna do this
Car Door 06.JPG 
