I'm upgrading my Skylark with a pretty strong BBB. While I'm at it, I plan to replace replace my non-stock (i.e., from a late 70's Oldsmobile), internally regulated alternator because it's getting a little noisy and, at a measured 85 Amp output, may not meet my needs when I add a self-learning throttle body EFI. I will most likely purchase a stock-appearing, internally regulated Powermaster 12si style alternator. My electrical loads currently come from: Convertible top Power windows Relatively small aftermarket sound system Halogen headlights HEI ignition (Dave's small body) Additional planned loads: EFI MSD spark box (maybe) I'm thinking that the 75/90/100A (idle/cruise/top end) version will be more than adequate. Thoughts? Comments? Thanks in advance for your responses.