I can't tell if you are in England you may have other sources
There are some English modders on the audio board such a Mob 17
that have done upgrades recently .
In the states you can buy kits from MusicarNW(best P&P no hassel systems) which contain the amp, speakers harnesses the amps are preset for whatever components you get with the system plus all speaker adapters and factory connectors needed,
The amp can be had almost anywhere. You need to get in touch with Technic
on the Audio Sub Forum to get his Harness.
The amp can also be found on most audio interface sides and ebay.
What is your location and country.
Last edited by ctuna; 09-04-2012 at 12:23 PM.