Thank you for the welcome.
This is how I came to know about the BBI RAAF items. I was searching Ebay for 1/18 P-51's well over a year ago and at the bottom of the search was the listing for all of the "Ebay Store Sellers". This beauty was pictured with with a listing so I looked at the sellers items. The seller was from Australia and he had this P-51, an polished RAAF P-51 (with sharks mouth), and an RAAF F-18. All three are BBI 1/18 and limited edition marketed in Australia only. I didn't buy it because it was listed for $175.00 Australian dollars (about $150.00 U.S.). I watched for less expensive listings, but they never came.
Time passed and I started to realize that I had missed some great warbird paint schemes and I wanted to do what I could to get the one's that I truely wanted. So a recent internet search confirmed to me that the RAAF was truely a BBI exclusive. See this link
http://sshqdb.com/coppermine/index.php?cat=106
Continuing my search I found two Australian stores that had listings for them, but one had an out of stock note. The other listed the two P-51s (Camo and Polished) as in stock and part of a limited edition of 200. I decided not to let this one get away and now you can see from the pictures all is well in the end.
It was hard to decide to open this one for it was the most expensive in my collection, but I didn't buy it for resale. I have only 1/18 airplanes and I buy them for my and my sons enjoyment (mostly mine though) . Plus pictures of a box with a dissasembled airplane doesn't do this beauty justice.
Link to the one store that I found this at
http://www.mibglobal.com.au/category519_1.htm
... and Willkommen to the Board too ! * 
* I thought it was a custom. * WoW !!! * 
