Need 2.5 midrange driver

I recently bought a used 2002 BMW 330xi that came with the Harmon Kardon stock system. Recently replaced the front stage with a set of JL ZR650's. Part of the stock system consisted of a 2.5" midrange. I would like replace the 2.5" stock speaker speaker and run a 3 way active front stage with the JL ZR's. what would be a good driver to use that will compliment the ZR's? These are located essentially right in the middle of the door and appear to be an optimal location for a midrange driver.

Any suggestions would be appreciated.