multiple alternators

does anyone know anything about multiple alternator setups? like how are guys mounting a few or several alts? is it all just one off brackets? and what is the best way to determine what size belt to use once you have added an alt or two?

try out this site....

http://www.caraudiomag.com/technical/0206cae_dual_alternator/index.html

NOw, uh, with the pick above...i dont think your going to find that in a kit...that set up looks like it might power a small city...