look at your bumper. if it has a bubble under the headlights it is warped. (don't worry, a lot of people get it.) If it is still flat, you have a rare case of "good bumper cover". lol
and seriously, if you have ever done any electronics work, upgrading the wiring would be simple. I think there is a how-to on here somewhere though.
harnesses for higher wattage.
http://www.eautoworks.com/html/ORD-1-1-1-4671.cfm
and for the wires, just replace them with thicker stuff.
I wouldn't suggest this project unless you had a soldering gun and plenty of electrical tape. It should be a simple replacement job. just Don't do too much at once...you might forget which wire/harness you're replacing.
