YES it is a GM alt. its what thay use to call a marine alt.(good alt.)nice for race cars.not much wireing to do.id be interesed in it if you whant to get rid of it.
Maybe he would be interested in the Mopar mini alt (with the brackets) I have of yours as a trade. If so I would be more then happy to ship it to him. All he would have to do is send or paypal me $25. This would pay for and cover the cost of the new wiring plug I bought and the shipping to his location...