I recently acquired a set of drivers and crossovers in excellent condition for a set of Mission Super 770 speakers. Unfortunately, I have been unable to find any data on the cabinets. The company sent me packing insisting all data is proprietary. They wouldn't even give me the exterior dimensions so I could estimate the volume. If anyone owns a set of these or knows a source for data on them, please let me know. Ideally, I would like the interior dimensions, driver spacing and orientation, vent size and placement, and cabinet compostion but will definitely appreciate any data I can get. The data on the drivers would be a great help if I need to design the cabinet from the ground up. A digital image would also be gratefully accepted. Happy listening.