If I remember, the inner lights are 5.25 inch.  There is a wide variety of
lighting units you can mount.  From the past the Cibie series 40 are
excellent, both the fog and the driving.  Today you can still find the 5.25
inch quad headlights (hella,cibie,etc)  If you use the H4 5.25 you have
essentially four headlights wired in parallel.  If you use the H1 high beam
then you have a high beam auxilliary driving light.

If you use the light they come with...since I don't have the specs on that I
can't help.

For real photon torpedos, install a standard 5.25 flood landing light in
one.  You can jacklight tarantulas in New Mexico from deep in the heart of
sillycone valley if you aim 'em right.

One of the listmembers has done so.  I seen 'em.  BUT they draw about 15
amps each if I recall.

Or...you could pony up for an old pair of Cibie Bi-Oscars (dual H3 bulbs in
each one) and mount em on a bar in the front.

The illuminating possiblities are endless.

pensioner