hi gav,
i also looked into importing a car from the uk some time ago, since then the laws on imports have changed and are now a little bit more relaxed. now you can import over a classic or uncommon car with out getting it complied in australia from memory you still need import approval, papers and all the quarantine etc. as for getting left hand drive cars over here they no longer need to be converted if there a classic or rare. i would be looking at getting hard to find classics imported such as minis, austins, mg's and dattos when possible as there all quite desirable over here.
cheers pauly