Hi Ian,
I've got a feeling you can just get a normal lock off ebay :
Lucas Land Rover Defender 90 110 Diesel Steering Lock Ignition Switch SSB301 | eBay
and it will fit OK. $85.
That problem you had with idling/starting back in Adelaide - what did that turn out to be? Was it a cheap fix?
Cheers
David
Edit to add: http://www.ebay.com.au/itm/Ignition-...7903311&_uhb=1
