I have a stock looking Delco unit in my 69 Charger...440...its a 100amp unit. I don't run a crazy stereo system though. just two speakers, no sub or amp. My philharmonic is under the hood. I also run an electric fan and HID lights. Looks great and cheap and easy to find, you do need to make custom brackets though.

On the 72 RR I am working on for my buddy..We installed a 140amp PowerMaster alternator. He is running a sub, 4 speaker system, electric fan, and H4 headlights. Single cable to the battery (00 cable) with a 160amp Mega Fuse. Using the same alternator brackets. Black powdercoated finish..Nice unit.