Very Simple swap..My advice is a 3 wire, SI series, Internally regulated alternator.
After getting your mechanical mountings set up, the wiring is as follows, If you have your external regulator still in tact..remove the red wires from the regulator and attach them together. (they support other power functions and must remain together):
Remove and connect the stock wires to the alternator as shown..EXCEPT for, the big red output wire...run that Via a proper Fuse link to the starter battery terminal on the solenoid..use a 10 Gauge wire.
If you don't have stock wires to follow,
- Big red 10 gauge to the starter battery terminal on solenoid.
- Terminal 2 to the horn relay power (or may be jumped to the big red wire)
- Terminal 1 to the idiot lamp.
- 10 gauge ground wire from the ground lug or mount bolt to your ground buss.