I've got a hi-output alternator on my 58 with the stock gauge, and have never seen it pegged - if the alternator starts putting out 72 amps with no loads to use it, the gauge would be the last thing you'll be thinkin about
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics