If the A26B is a serious consideration for y'all, there is the Spirit of Waco, based at Waco Muncipal Airport, in Waco,Texas. The folks that fly and maintain her work at Ram Aircraft I think. This bird sports 8 .50's in the nose, 6 .50's in the wings (3 outboard of each engine), 2 remote control turrets with twin .050's in each, 1 upper, 1 lower. If flight data is required, I'd be happy to make a contact with relative works out there, might be able to put ya in contact with the pilots, not sure but will try if needed and can be of help.
This bird also makes up the Ranger Wing of the CAF.
DRAHN