Yeah, sweet Zac - I found that Spit model a while back too...never did anything with it tho...
FWIW I'm thinking of doing some more NZ related Spitfire repaints for the FSX RealAir package once I get my "AL" repaint out the door, and the next one I'll have a go at is a copy of MH367, Doug Brookers aircraft. Though since RealAir only provided a single seat model it won't be quite the same as the current (non-)flying aircraft...
Good thing about the RealAir spit is that they provide a really nice paint kit, full of layered photoshop files...makes it really quite easy even for a repaint n00b like me!!

Mark