Ventilated seats retrofit?
 

I have read a few forum posts about adding comfort ventilated seats to the e60, but most people have taken them from an m5 or they are going from base non-heated to comfort heated and ventilated.
I found a set of front comfort heated/ventilated seats from a 535xi for sale fairly close to me and I'm wondering if it would be possible to do this. I have the comfort seats in my car currently, so what would I need to do in order to add the ventilation function? Do I need more modules, ducting, coding?
Any help would be great, thanks!
I want to do a PDC retrofit too... Luckily there's a decent amount of info on that.

Hey, did you ever end up doing this? I see a local set of M5 seats with ventilation and I'm tempted to do it. I see which switch I would need to purchase as well.