I have an A4 B7 with reflector style headlights.............

I want to upgrade to the new LED style headlights but all the ones I see seem to be projector type with the LED strips built into the headlight and they seem to be plug and play.

If I got one of these kits would how would they work?
is it as simple as plug and play a new projector style headlight onto an existing reflector style setup one??