I installed these in my old van, that had no door speakers, or any provision for door speakers at all, just flat door cards. The speakers are no too deep, and with a 9mm plywood mount and sound deadening, they are hard hitting loud speakers, very crisp treble, but not harsh. They are a joy to listen to, and are easily driven by my low powered head unit. The cross overs are small shrink sealed units, rather than boxes which makes them easier to mount.
Pros: Great sound, crisp highs, solid lows
Cons: amazing sound from 5 1/4 speakers, but drop off at 70hz, a good compromise...