alternator and headlight upgrade

My headlights are pretty dim and brighten as the rpm's go up.
I think it is time for an upgrade.

Has anyone improved their bulbs and alternator?
What is stock anyway? 60amp?

Its for the 74 318 Duster.
OK GUYS DONT GET PISSED AT ME! THE GUY WHOM I I BOUGHT NY DUSTER FROM CONVERTED IT TO A GM ONE WIRE.I NEVER HAVE ANY DIMMING PROBLEMS EVEN AT LOW IDLE.I KNOW THE PURISTS ARENT GOING TO BE HAPPY BUT IT WORKS GREAT.

duster eng side.jpg