This model started out as a Chipmunk, built by me around 1983, following a flight in a real Chipmunk from RAF Leeming with the Air Cadets. It sat in a box in the loft for many years and was discovered recently when moving house. Looking back, the build was quite crude, but I couldn't throw it out.
I then remembered the film "The Great Waldo Pepper", which featured a modified Chipmunk starring as one of the planes in the film - the "Stiles Skystreak" ( screenshot below from the film ). The idea of converting the model to the film aircraft was born! I started work a couple of days ago on August 8th.