Retrofit AMP meter

Hello, I'm fairly new to the forums, but I'm looking to put a 60 amp Alternator in my 67 Dart. I've been told that the old AMP meter may not handle it and that it is a fire hazard. It works fine, but I've also heard of people doing retro fit volt meter conversions. What have y'all done and what meters have y'all used? I'd like to continue to keep this car looking fairly stock and hate seeing a dead gauge.