light bulbs

essexcoupe3131

hi guys and gals,
                          trying ti find a led light bulb thats twin filament
to use in the side lights of my 31 coupe, currently running a Koito 12v8/3.4w
i believe this is out of a motor bike light as there isn't much room in there
also if the is any new bulbs I could install in the headlights
currently running an early style halogen, but they arn't that bright at night
especially in back road
thanks for your thoughts
Mike

essexcoupe3131

PS would need to be an equal pin bannet style
thanks