Ported, Audi A3, 19.5 cubes, 140 amp alt. Amp I don't know that's actually my latest thread in the DC audio section.
I don't plan on upgrading the alt(voiding the warranty=lame) so batteries it is.
Um any other info needed?
Edit: Might be a GTI instead of an A3 which would be 15.1 cubes instead. Both are plenty.