Hmmm, just had a look at the Zadatech site and I'm really quite liking this idea. The prices TBH are not bad at all.
Their independent units look like a reasonable alternative or the 6 gauge one can be fed into an independent screen, say one for the gauges and a reverse camera for example. That would enable music as well as gauges and reverse camera too.
Just a thought.
Just seen this on ebay mate how about gutting it and putting a bunch of gauges in it http://www.ebay.co.uk/itm/TOYOTA-LA...873991?hash=item25b3c5ca47:g:tHkAAOSwo3pWdLiC