Just a suggestion; instead of a variety of suggestions based on
who-knows-what, try going here:
http://www.danielsternlighting.com/tech/lights/fog_lamps/fog_lamps.html
... and read what that "expert" (very respected in most automotive circles)
says about fog lights .... and lights in general. It may answer more
questions than you had thought to ask.
bob
after reading what Stern has to say about fogs, it's not their height on the
vehicle so much as their nature (bar-shaped beam and upper cutoff, dark
above, light below), white to "selective yellow", and tungsten or halogen
bulbs.