If equiped it was me, I would go to a junk yard and get a alt from a 4x4 dodge truck or something else V8 equipet. then fab some brackets to make it work. I know they make a 136 dodge nipso denso and bosch alt, and i believe there is a stock 160 for a dodge . But again, you will need to either order a custom, or hack something in.
Did you google a replacement and see what options are there for it?