I'm not sure if this questions been asked for not, but would it be possible to convert 9004 to a H4? Or would it be even possible? Say it was possible, how would the beam pattern be, would it have the nice cut-off flare like most H4 equipped cars have? I already know 9007 can be converted from 9004 easily, so I dont need any input about doing that.

 

How would the h4 bulb stay in place? 9004 and 9007 are identical except the wires are swapped.

 

I know the housing and the base of the bulb is totally different, just wondering if it will be possible to make it fit?

 

doubt it......