You're by no means the first person to get screwed by Wolverine. That seems to happen pretty frequently.
Im not sure about a kit, but my truck has a standard internally regulated 24 volt Delco installed with a couple simple homemade brackets. While I bought the truck this way, Ive done the conversion on other machines I have and its really quite simple. It basically amounts to a bent piece of flat stock with some holes drilled and tabs attached. A vice, a big hammer, a drill, and maybe a welder and/ or torch is all thats required to whip up a bracket or two. The last two can be picked up cheap at Harbor Freight if ya need, and may not even be strictly necessary depending on what you come up with.