Tent Options for Ute Tray?

I may soon be purchasing a tray top ute and I'm considering a basic camper set up. I'm just a weekend camper so I don't want anything too elaborate.

Is anything like this link available in Australia?

http://www.sportzbynapier.com/truck_tents.html

Yes they arent for flat tops but you get the idea. All I need is something equivalent to a (waterproof) tent for two people that somehow goes on the flat tray and preferably an awning attched as well.

I like my set-ups quick and simple :-)

Thanks for any advice.