hey guys, i've been busy today putting these new mirrors on - i'm quite stoked

. But I ran into a snag - I got the passenger side on pretty well but when I started on the drivers side and tried to pull the mirror out of the stock housing, I ended up tearing the motor into 2 pieces! I know, I know, every walk-through says 'firm but gentle' and I didn't pull any harder than the passenger side but the mirrors came off with the front/face of the motor still snapped/connected to the back of the mirror. I can see that the part of the motor face that's actuated by the electrical motor is torn off and seems beyond repair. I was able to shove the face of the motor back onto the main motor body and adjust the mirror manually since I was able to get the threaded plastic studs (connected to the face of the motor) back into their proper holes on the main body of the motor (this seems to be what allows you to manally 'snap' your motor incrementally up/down left/right without using the side view mirror adjusters from inside the car on the driver's side.
I'll try to post pics in a bit of the 'situation' but i'm pretty sure the mirror motor is beyond repair. I'm planning to call a nearby Ford dealership up on Monday and see if I can buy a new mirror motor - what I need help with:
Does anyone know the part # for the (driver's side, if it helps) mirror motor itself so that I can just fitscrew it into the mirror housing? Do you guys know how much that would set me back?
Thanks for any help in advance guys - it'd definately be really appreciated!