if you have a 20r or 22r i did this mod on my red austin bantam which has a 20r. i put a one wire chevy on there. i just shortened the depth of the lowere pivot braket and the adjustment bracket was just lenghten. you can see it on the (american) driver side of my truck in the profile. thanks guys
Tim i know a guy here in fresno that rebuilds alternators, he can make you a HIGH output altenator for cheap, he rebuilt mine plus upgreaded it for $25 bucks, it looked brand new when he gave it back to me.
I acutal got one for sell it is from Ohio generator 140amp I think. I didnt run it very long. I got it for my electric compressor and changed that to a york after about 2weeks so it has only been used for that long.
you can also use a 1 wire GM (about 100 bucks for a chrome one from J.C. Whitney) in conjunction with your factory one. just build a bracket and your done.