The Sydney Jeep Club trip to the Cape ran into a guy in Cairns (outside the Sunlander Caravan Park where he noticed all the Jeeps parked) that worked for the dealership there, and he was a big help to our CJ6 owner. So ring Ireland's:
http://www.irelands.com.au/chryslerjeepdodge
Yeah, I know, the whole 'stealership' thing, but sometimes you need the tools, knowledge, and stuff that only they seem to have (compared to some petrol station mechanic).