There was a thread where a guy on here bought some jeep LED headlamps and used em on his 64-65 cuda. Had to machine down some of thecooling fins to fit in the headlamp bucket. Pretty pricy but nice. Even though LEDs draw less than regular lights, trailbeast is correct about the voltage drop. The power has to run about 12'-15' total length to get to the lights. This results in about 10v output voltage at the lights when its wired stock, plus melted hi beam plugs, and bulkhead connectors when the **** gets old and crusty. Even with more efficient LEDs its still a good idea to run a relay setup to provide power from the battery directly to the lights, and take the load off the bulkhead connector, headlamp switch and high beam switch.