Recently bought an 02 plate Bora ST TDi which I like very much however it was fitted with a Beta head unit/single disc CD player and only front speakers are present. I've bought a Gamma/in-dash 6 disc changer off eBay as I'm keen to keep the OEM look of the car as much as possible. Checking the back of my head unit I have no wiring at all for any rear speakers, nor are the rear speakers fitted. So:

- How easy is it to fit the rear speakers and wire them through to the head unit? Is there a "howto" for removing the rear door trim anywhere?

- I see an eBay source for the rear door woofers but is there a convenient source of the tweeters, apart from another mk IV (say a scrapper?) Are the actual speaker units the same for the front and rear tweeters?

- What ballpark price would be fair if I asked an ICE specialist to do the job? Supplying, fitting and wiring the speakers?

Oh, and, one final thing - is the illumination wire the same on the VW in-dash 6 CD changer as it is on the single disc player?

Thanks to all in advance.