What are you folks using for a high outout alternator in your hotrods?

Can’t imagine needing more than 100 amps unless you have some huge booming stereo system onboard with big subs or something
A 165 amp puts out around 100 at idle where as a 100 amp alternator typically puts out around 60 amps. Cruising with everything on at night my car would be right at the limit with 60 amps at idle.