Les,
There are a couple of different alt brackets. It sounds like the one you have mounts to the manifold which doesn't help if there is no corresponding mount hole. The other one mounts the same way on the water pump but picks up the right thermostat bolt. The other pieces are a small angle bracket that mounts to the rear of the alt. A dog leg bracket that mounts with 2 bolts to the water pump and a long 3/8 bolt that screws into the head. I have seen the brackets at swap meets in chrome so they must be in the aftermarket.
Fred
