Clue look at the undercarriage?

North American NA-16. Undercarriage and inner wing look almost exactly like the T-6.

Well done Jim it is a photo of the prototype NA-16.
LINK- http://en.wikipedia.org/wiki/North_American_NA-16
And of course your coveted prize.

This weeks headache?

Have fun

A Clue - Not Russian.

I was thinking it looked an awful lot like a Frogfoot, but it's one of the Northrop YA-9A prototypes (minus the engines) at the March AFB Museum!

Well done Jim it is the A-9A.
LINK - http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=3198

And the prize of course

This weeks headache.

Have fun.

Firefly ?

Looks very much like a Firefly, but it isn't ?????