You can find inexpensive to expensive Halogen, LED or HID bulb options. Some make a significant improvement in what you can see, others do a significant job of blinding oncoming traffic. Sticking with kits from established Slingshot aftermarket sellers should hopefully get you a product that is an improvement while hot blinding oncoming traffic.
Here's one of the best threads - Better headlight bulbs and includes several YouTube videos about comparing Halogen, LED and HID solutions.
