I have the DOT quad sealed beam set up on my car. I pulled the pass. side high beam and ran a metal drier hose to the air box. Makes a big difference. Angle is fairly important, too. Steve '84 5ksT 1.6-2.0 bar Disclaimer:"Any information contained herein is based purely on my own personal experience and may not necessarily reflect yours. Use caution as your results may vary from mine."