EE Lightning ventral fuel tank wanted

I’ve just spent an hour removing the botched fuel tank skin from the belly of our F.53 Lightning at Dumfries. It used to be plinth mounted, and as we are not intending to re-mount it I have removed the skin to allow for removal of the plinth mount from the fuselage. It appears that the rear section of the forward ventral tank has been removed, the outer skin cut round the mounting, and then pop-riveted back in place. We can panel over this hole, but it would be nice to carry out a decent repair by replacing the tank. To be clear, this is not the rear fairing with the strakes attached, nor is it the central tank, but it IS the forward tank which extends as far as the missile mounts.

Does anyone know of any spare tanks which may be available?