I have the the HID ballasts and bulbs on my 69 Charger. I absolutely love them. I too have had the H4 with the painless wiring kit (On my 70 Charger once upon a time)and it did a good job but the HID blows it away. I bought the 4 matching Hella housings, I think I dropped $180 on the four plus another $40 for the Sylvania for the Hi beam side and another $175 for the HID kit....I aimed my headlights lower than normal and they still bother other drivers BUT they are approved for EU roads...