Kem, if you are looking for something to get me for Christmas..........

[Hurst]

........it's in your neck of the woods: -

http://cgi.ebay.co.uk/Original-WW2-B-24-Liberator-Tail-Turret_W0QQitemZ110471714334QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item19b8a0961e

[Kemarik]

Oh no.  That would look too nice in my living room!

[Samuel]

Disclamer at zee bottom : Does not fit B-17, B-18, B-19, A-20, B-25, B-26, B-29, B-32, P-38, P-39, P-40, P-47, or P-51

So........ How do you glue it on a Mustang? 

I just remembered this ........... 'unique' aircraft......... ineffectiveness not withstanding. 

http://en.wikipedia.org/wiki/Boulton_Paul_Defiant

[Dorotheus]

You don't use glue, a 3/4 inch thick layer of No7 elbow grease will work and will also provide lubrication for the rotation of the turret.