Alt advice

Hello Everyone!

Time for an Altenator upgrade on the 67 Dart, 360.
Looking for some advice on which one from those who made the plunge!

Everyone seems to be going to the squareback style, question is internal or external Altenator.

Would like to get rid of the severe dimming lites and discharge at idle speeds.

http://www.summitracing.com/parts/pwm-17509/overview/year/1967/make/dodge/model/dart

http://www.summitracing.com/parts/tff-7509rdsp/overview/year/1967/make/dodge/model/dart