I've played around with LEDs quite a bit, but I've never heard of a 9006 LED bulb. I doubt it would be bright enough. To use LEDs in headlights properly, you really need to redesign the whole headlight with different optics, otherwise, you're right, the light will not go very far. Silverstars, by the way, are a poor substitute for HID which is by far the brightest option, uses less energy, and costs as much as two sets of Silverstars now.