These days, bright headlights are available for any car. The trouble with classic Mustangs is the original wiring isn't designed to handle high-wattage lights. Another problem when using high-output lights is that the circuit breaker in the headlight switch can't handle the current. The cure for this problem is installing two relays, which are included in the wiring harness that comes with the Reenmachine package. The Delta lights also look good, as installed here in our '69 Mustang project car.