Buy it from GPStore here: http://www.gpstore.co.nz/Games/1470085.html?id=1470085
This would be a good way to get ready for the upcoming Wanaka scenery, you'll need a good warbird to make the most of the Warbirds Over Wanaka airshow scenery!

Product Description:
Airpower adds seven meticulously created aircraft, visuals, and missions to Microsoft Flight Simulator 2004.
The game features gorgeously constructed aircraft, inside and out, down to the last rivet, fully clickable cockpits with authentic working gauges, and 3D cockpit representations so real, they look just like their 2D rendered counterparts.
The latest wind-tunnel technology helped the developer to create for the most authentic, fluid flying qualities, including complex spins and stalls.
There are also other visual upgrades, such as enhanced lighting visual effects. Fly the famous heavy bombers of WWII and the ingenious German jet technology that opposed them.
Also features a detailed manual including rare data and the real operation of these amazing aircraft.
So for those out there that live for realism and depth, Wings of Power delivers on a scale never seen before! However, even with all of this tremendous detail, you can still just throw the throttle forward and fly away...