What is a small block?

I have a couple of kits for SB's but none with the big amp stuff. I have a 60 amp Denso kit and a kit for racing that uses the super tiny 55 amp Powermaster alt. There is a factory bracket kit that hangs the 120 amp unit on a SB so I didn't bother designing my own. Just hit the wrecking yard for that swap. (it is kind of ugly though and rather heavy)