Rep Power: 291

I'm looking for the length between the base of the lense and the mounting holes of the halogen projector that comes installed in the TYC projector headlamps. i'm going to do a retrofit in a set of TYC's but i'd like to know this dimension before I go buying everything. or any of the other aftermarket projector housings. if you have those dimensions, could you let me know them and the brand of housing? thanks.