It will be made of many components the casing material will not matter much.
kicker
It depends on your car, but for a large car you can get a proper subwoofer with a wooden casing for less vibration.
A small 10" subwoofer would give enough bass to fit a small car and leave enough room.
The Kicker ZX300.1 Subwoofer Car Amplifier is great.
Looking for the perfect subwoofer for your sound system, just go to bossaudio.com and they have the perfect subwoofer for your sound system. Listen to your favorite music and movies with this subwoofer.
The Alpine 10" Dual-Voice-Coil 4-Ohm Subwoofer is considered the industry standard for range in subwoofers.
It should be okay long as it was made to use in a car.
OEM Rear BOSE Subwoofer is best for Porsche
The Legacy subwoofer gives great output for the money, but if yo're looking for the best sound, consider the Pioneer flagship subwoofers.
You should really get a custom made box for it. Actually ever subwoofer should be housed in a custom made box. This way you can tune the frequency. The lower the frequency the lower the bass. Ask any Car audio shop near you, they will build one for you for cheap!
The higher output and wattage wiring works the best for any sort of subwoofer setup.
your car should not stall after installing a subwoofer. your problem might be the fact that your amp and your subwoofer(s) could be using too much of your cars electricity.