Fitted some BikeVis bullets to the Tiger 1200 for extra visibility (to be seen). I also used their PodMod which modulates the light slightly, a slight twinkle, not a flash, which makes a big difference to catching peoples eye. Even if you are not using the modulator they look great, they might suit the classic bikes too as they are very small. You do need to think about mounting, you have to have a surface to mount them on that you can drill a wiring hole as the wire comes off the base. For the classic bikes maybe a litttle bracket from the heaplamp or fork area? £18 for a pair of lights and £24 for the optional modulator. I made a little vid here for the effect. They also do Amber and Red for the rear. They do Blue too but I would say Plod would pull you up on those.