Removed original voltage regulator and now it wont start

I have a 1965 Dart 270 that I'm working on and just recently I installed a new 100 amp altenator with an internal regulator to replace the 60 amp it originally had, during that I followed the wiring diagram for the car to take out some wires I didnt need any more as well as the external regulator now it doesnt even want to turn over, do I need that regulator or is there a work around?
I don't know what diagram you followed but a basic '65 Dart generally has no extraneous wires, at least for street use.
Also '60 amp' rated alternator is not original but knowing that may or may not be important.
What are you trying to accomplish?

Pishta is correct. Higher output alternator is generally not going to put out any more current than a stock unit - except if the battery has been drained down. IIRC '65 a-bodies have a robust pair of connectors for the main feeds, so that and the ammeter run should not be a problem - again depending on what you're doing.
Not sure why Brian posted a diagram that looks like its for Aussie Valiants. But the concept is pretty similar.