HMS Eagle was supposed to have taken part in Op Judgement but was rendered hor's de combat just previous. It was always intended to be a larger strike; Murphy got in the road.
Gloster F.5/34 had a one piece wing a la the Zero; don't know how much of a problem that might pose to Glolster; but the Zero never got proper folding wings partly for that reason as I recall. I don't understand this thread, Mogan and Shacklady already pinpointed the problems: Richard Fairey and...
It is the Townend Ring that spoils it. Swap it out for an NACA cowling, or similar; that'd do a lot for its looks IMO. I'd build and kit-bash it: I'm a bugger for WIF?s.
Conservatively c.355mph. Cube the original speed and divide by the original horsepower. Take the sum and divide the cube of your desired speed by it. You'll get a consistent result that is on the conservative side (or someone is lying!). It gives you a good enough ballpark figure; but you'd need...