I like lights low and protected in the bumper or grill and it looks like you already have a set of fogs/driving. If you are trying to increase your headlight performance, I would highly encourage a set of IPF or Hella H4 replacement headlamps, world of difference there.
Sorry about the picture above, Yakima lists all the parts on their webpage and here is a cut and paste.
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Fit Information
Vehicle: TOYOTA Pickup Xtracab 2dr
Year Range: 1989-1995 Fit Type: Top
Factory Rack: Naked Roof Weight Limit: 165 lbs
Tower: Q Towers Required Accessory:
Crossbar Length: 48" CrossBars Recommended Fairing: 44" Fairing
Front Clips: Q16-A Rear Clips: Q16-A
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My builds have progressed to more of a "need" basis. Having said that, a topper or bedrack would also give you "the look", be more useful, and not as detrimental to your MPG.
Cheers, Chris