good ol' strobes

well all i have to do i drill a half inch hole for them, they have a rubber cap seal thing-a-majig, but i found out how slow they flash (on high seting) so ive decided when i get good and ready to put them in my headlights....thats where they were originally intended to go anyways......

anyone know where i can get some cheap bright fast flashing strobes to go inside my car....pilot strobes are the one i have now for my headlights, again, theyre too slow