[Dangerous Doug]

Equivalent wattage LED's will be brighter than incandescent bulbs because the viewing angle of an LED has a limited angle, wherein the incandescents disperse light in all directions.

Before you spend the $ for an LED replacement, make sure you have an adequate reflector on the incandescent bulb so light is reflected and directed out through your lenses. This may solve your brightness problem. Shouldn't be hard to find a small, parabolic reflector and mount it behind the incandescent bulb directed through the lense to get better output.

DD