engine and drivetrain I would like it if more than 1 person answered this Question

[AlanM]

http://www.zeebuck.com/bimmers/tech/batteryrelocation/underseatbattery.html

I have a similar, but not metal sided Hawker battery in my 02. Just one of them though, mounted behind the passenger seat in the same position as above. It weighs 9Lbs and starts a heavily modded S14 easily. It is only 15 Amp/Hr though so don't leave your lights on.

I also have one of these tiny batteries on another car with a modded 4 cyl that is still going fine in its' nineth year. Not overly cheap new, but the longevity is amazing.

[ingraham]

I did it to impress Jodie Foster.