It can be done but you'll need a host of parts...and its not as easy as some may indicate. I have done it. My car had non of the wiring in place, so i had to start from scratch
First you'll need the wiper arm , wiper motor, mount and correct wiper arm transmission (there are 2 different ones)
As mentioned a different rear A/C condenser is needed. The one with a rear wipe motor "cut out"
3 different wiring harnesses. The front harness from the switch to the the fuse panel The center harness from the switch to the engine compartment (front to rear of the car) The 3rd harness is the one in the engine compartment.
You'll need a wiper switch and the diode that goes to the switch
Ping Dennis "timmy2" for the center harness He made one for me. The front and rear harnesses are available from Porsche and not too expensive.
While adding the wiring in front and in the engine compartment isnt difficult, the center harness is a pain. I took the opportunity to do the center harness only after i dropped the motor to gain access to run the wire at or near the main harness in the center of the engine compartment.
The replacement A/C condenser is a whole project unto its own. Luckily for me, my system was already emptied of refrigerant. if not you 'll have to empty the system and ultimately get a recharge.
