There are ears on the left manifold for the generator bracket which can be easily modified to take an alternator. I have not seen any that weren't drilled and tapped for the generator bracket but have been told they were made. I don't know where they mounted the generator other than on the left manifold. I have pictures of two 56's, one with just generator and the other with generator with the p/s pump on the rear, both mounted on the factory left manifold.
