A photoschnozz. Demon FR.2 if the engine's improved.
A 4 foot extension right at the leading edge of the wing, converted to two place, and fitted with some kind of ECM on the tail. In keeping with McDonnell's theme of evil, scary spirits have the machine named after some kind of wicked electricity. Obvious engine upgrade.
[Edit]: Is Cliffy B my twin from an unknown life?
An RAF/RN/RAN/RAAF camo bird would look great as well! Sea Gray and Slate Gray over Light Gray = awesome on a stick!
An ECM bird is a sweet idea too! Maybe mess with the time line of the Demon and have some of the later models survive into Vietnam. They'd look good in SEA camo with black undersides and a load of AGM-45 Skrikes! Ah, man I need a kit now!!!!
As for a name for it I can't think of a good one right now. Anyone know of any mythical electric entity/ghost/animal? "Volt" comes to mind but it's pretty lame... "Electric Eel" isn't cool enough either...
For the re-engine how about one of the F-4 Phantom's engines? The type escapes me at the moment but would one of those work?
One problem in all of this.....anyone know of a production kit of the Demon? I know Ehmar and Grand Phoenix both make the Demon in 1/72 and 1/48 but both are OOP, hard to find, and expensive when found. Ideas?
Daryl, great minds think alike huh?
Just found this on Cybermodeler, a delta winged Demon!!! Here's a link to the book showing it and others http://www.cybermodeler.com/hobby/ref/zich/book_zich_mcdonnell.shtml