The best way to upgrade is to fit a good set of component 6.5" in the front and some compact subs in the rear. Tap into the rear signal at the point where you 'channel swap' and fit a line out convertor and take that feed to a 4 way amp.

The alternative to the compact sub rears is a full size boot sub. Hell, if money is no object then fit a full sound/time alignment processor like a Audison Bit One.[/QUOTE]

Hi Vidal.. have you done either of these..Id like to do something to improve the sounds.. dont dont want to spent too much

Delboy... I do know some of the guys have done the 50 quid upgrade and said it has made a difference.. but is it a noticable improvement for the minimal cost..