Putting LED bulbs into an assembly that isn't designed for them produces poor lighting. The LED bulb does not produce the same light pattern as the halogen bulb and so the reflector does not produce and even output. Stray light, uneven pattern. Some people like that I guess because it sure seems popular.
Buzzkill..... Suddenly not so excited about wrapping this project up.. We'll see how it turnes out, anything marginally better than stock is a win in my book.. I'm not out night running high speed canyons at night in a 24 year old station wagon....