Need some light if traveling at night:
Replaced all bulbs with Holley's RetroBright.
I have too many exterior lights and street lights to get you a good picture, but they are a large step up, and I got the "Classic White".
The only gotcha is that you need a LED compatible flasher with a polarity reversing adapter (or make jumpers to reverse polarity)
You need for a 1972 anyway:
7" round headlights
1157 Amber for the front turn signal/park lights
1157 Red for the Rear Brake and Turn
1156 White for the Reverse Lamps
194 For the bedside markers.
When possible using LEDs you should use a bulb the color of the lens over it.