I think your missing the point?

Sure, alot of time has gone into fitting all that Audio equipment, but its defeats the point of buying such a car, only to fit lots of heavy amps and subs. The point of kit cars like that, are to provide "back to basics" fun, and provide fantastic handling due to there LIGHT weight. Adding all that ice makes it heavier, and will ruin its nimbleness.

Its like buying a cosworth, and fitting a 1.2 from a fucking punto.