Use an alternator. Go to your recycle yard and get a 80's delco alt. Make a bracket. Change your pully if it's not the one you need.You should be able to find a wide pulley on the net. I have seen them. The alt has one lead off the back wire it to the postitive on your battery. The alt will have a plastic 2 prong 2 wire that plugs in the top. You can get the 2 prong at auto parts store. The red wire you need to wire to the hot side of your coil. When you turn your key on it will turn the alt. on also. I have seen a (how to) on this site somwhere.good luck