Don't know if there's any drawings around Brian, but you could try these 2 sites for ref pics:
www.adf-serials.com
www.motty.hobbyvista.com
HTH
BTW, the Govt has stopped payment to Australian Aerospace (who are building the Tigres under license in Brisbane). At the moment the helos are test hacks for live-fire missile testing above Woomera rocket range