I was searching around on eBay and found a Double Din Facia Panel Kit to fit an i30.  It may be of interest to anyone wanting to fit an after market stereo.

http://cgi.ebay.com.au/DFPK-31-01-Hyundai-i30-Double-Din-Facia-Panel-Kit_W0QQitemZ160365072847QQcmdZViewItemQQptZUK_CarsParts_Vehicles_FasciaPlates_SM?hash=item255680d1cf&_trksid=p3286.c0.m14

Bob

[Lorian]

There is also an adapter for steering wheel radio controls:

http://cgi.ebay.co.uk/HYUNDAI-i30-Steering-Control-Stalk-Adaptor-CTSHY001_W0QQitemZ350233200555QQcmdZViewItemQQptZUK_Cars_Parts_Vehicles_Terminals_Cabling_ET?hash=item518b8687ab&_trksid=p3286.c0.m14

Not sure if they ship to .au though.

Lorian,

Good find.  The seller you found also has a dash kit for the i30 plus parrot hands free adapters.

Bob

[Shambles]

There is also an adapter for steering wheel radio controls:

Not sure if they ship to .au though.

Their "post to" dropdown does include Aus

These are good finds