Traditionally, fog lamps, usually with yellow or orange light, should be very low and wide to spread the light across the road just ahead of the car, to illuminate the edges of the road, so they should go under the bumper near the ends. Driving lamps are traditionally mount higher, and closer together to illuminate the road more brightly and further away, so they should go at about the same height as the headlamps, and closer together, but can be tailored to give light as desired. the S30 has a problem with the mounting position for driving lamps, because the later models have the turn signal lamps in the place where you would probably mount the driving lamps, so you will need to compromise. Alternatively, the rally cars put the driving lamps in the best position, across the hood, but that's not a good idea for use on public roadways.