I recently completed the Airfix Invader, it's an older kit but it goes together well. To make it stand out a bit I added the Airwave PE set, brought it right up, here's why. included in the PE set was the Canopy open option, including the open canopy frame edges, the stays and some extra detail for the interior, lets face it, the older kits need a bit of a leg up to make them stand out in todays amazing modelling standards. the PE parts are by nature ultra fiddly, but they add so much to this venerable old model, that has served at least as long as the plane itself.