WOULD THIS 100 amp alternator work

I had a large stereo installed in my Dart so a big alt was nice as it kept up with the amps very well when really cranking the tunes while driving. The charging system in a Mopar is fast enough to pump out more current whenever a big bass note would hit, I could see it on my amp meter.
I also believe in if it breaks make it stronger and better, that's why I ended up with a 727 and a 8 3/4 with a power lock sure grip, car all ready had 340 suspension, I added front and rear sway bars too.
If you run a big gauge wire from the hot lead of the alt to the positive lead of the battery that will take care of most of the juice running through the dash.
We had it done with my sisters 71 Scamp when I added a cop alt to it and it's run along the fender wells and along the back of the firewall and tied up neatly so it wont fall down somewhere and melt and burn something up.
I think you could just tie both side of the alt gauge together or run a big jumper between then to get around that issue then run a volt meter somewhere if you still want to keep track. If I'm wrong on anything someone will jump in and correct me I'm sure.