Mopar performance alternator 1or 2 wire???

As @67Dart273 mentioned above, you can do that, but its not a good idea.
If your car is a '69, you also need to be cognizant that this will disable the feed to the distributor.
Its a 71' also I am using msd. I actually converted my 68 cuda to a 2 wire circuit. The other wire just looped back into the other circuit.