Yeah i've got components in the front.
I replaced the door speaker, put the tweeter behind the mirrors base plate. (My cars got electric mirrors so theres no little handles there), the crossover box i hid in the doors arm rest. If you look from the reverse side you'll notice a hole. I squeezed my crossover box down there and screwed a screw into the box slightly to stop it moving and sliding. Theres no need to damage the door cards etc.
Also i didn't have to feed all the wires through the car, they sit in the door. The Fiat Speaker Wiring is pretty good.
Joske