What is your design goal? To maintain originality or to modernize your 48-year-old car? Personally, faced this question in 2000, I went original as possible. Your goal may be different. Are you installing electronic ignition? Larger wheels and tires? Changing up the suspension or adding Bluetooth? If you are doing these things, your decision is made, go with the LEDs. Otherwise, confirm that you are getting the best light possible from the original system and leave the LEDs to other uses.