SHADO Mobile 3, equipped with rocket launcher and machine-gun turret
The model features: rotatable machine-gun turret, adjustable rocket launcher (can be lowered into main body), working tracks, detailed cockpit and rear-doors can be opened and reveal rocket re-loading tubes
(further pix can be found on www.brickshelf.com)
I like how it's boxy (in a good way), and there's some nice SNOT techniques. But the front bothers me, It's sloped and doesn't really match the rest of he model. The stickers are a nice touch,BTW.
UPDATE: sorry, I didn't know it wasn't your original idea.