Thanks for the replies guys, The BMW upgrade, do you have any links or pics so I could look at it?

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Hey, I've been trawling through the forums and i have registered solely to ask a question. I am looking to buy a 2002 4.4 Vogue LPG. I have noticed however, it has the same head unit and possible DSP option as my previous 4.4 X5. What options do i have in terms of audio upgrades as i...