I'll start by saying, if you need another driver for Chump events, shoot me a PM. I've rented before and enjoy doing that much more than building my own car. Plenty of enduro experience, day and night, wet and dry.

You can get something like this and use the 100/80 bulb, there is a kit on Amazon.

Hella 7" Round

I usually just go for the HID and be done with it. Get's pricey if you start breaking them though.

Hella HID

I haven't tried the LED light bars yet, but they look promising and also pricey.

Rigid Industries

I have the Hella kit above for the Dart, but I started with some take off Jeep Wrangler lights that were fairly cheap.

Jeep Wrangler