LED Headlights

So I bought some new headlights for my 74 Dart with replaceable H4 bulbs so I could Install LED headlight bulbs. What I found was there is no room behind the Headlight for the LED bulbs and cooling fans. I either need to go with HID's or cut the fenders for the LED's. I know a lot of work, but the LED's are so much better than the HID or Halogen bulbs and this is for my Daughter, so I want her to have the best lights I can install! What do you guys think? I would hate to cut up the car, but for better lighting.