100 amp alternator

In the midst of a load of stuff I bought a while back is a 100 amp Mopar alternator. I now have the original 65 amp which came on my 70 Dart. Just from looking at the mounting situation for the 100 amp, it looks like it is a bolt in swap. Even if there are some minor "adjustments" I would like to use it. I am installing a serious stereo with an amp, have 2 electric fuel punps,(one for the carb and one for the nitrous), 2 electric cooling fans, nitrous oxide, 2 extra ignition coils for the flame thrower, full instrumentation and so on. I felt that the 65 amp would be working overtime. Now I am concerned that the 100 amp may not be enough. What do you think??
Also, I would like to know if the stock voltage regulator for the 65 amp will also work for the 100 amp??
I thought that the 100amp's had the regulator built in.and I would up the wire size.that's my thuat.......Artie