With some creative application of bulbs you can make your tail/brake light a lot brighter. The tail light on my '38 coupe is brighter than an 1157 and the brake is about the same as the 1157. I'm still at 6v.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.