Heated seats retrofit for vinyl E53

[skialex]

Hello, first of all, this is a cross-post from bimmerfest, so I apologize in advance to those who are seeing it twice. Here is my question ( I searched the past threads, but was not able to find the exact information I am looking for):

I am a proud new owner of a base model 2004 3.0i E53 with leatherette (vinyl) interior. The car is great, but the only thing I am really missing is heated front seats. We go skiing almost every weekend, so heated seats would make a huge difference on those early mornings. I was wondering if it is possible to install the heated seats as a retrofit. I would like to stay to the OEM parts and look as much as I can. Thnaks in advance,

Alex


P.S. I looked over the web some and there is lot of conflicting info, some say it will cost $160, others say it will require new seat cushions and would run up to $3K, so clealry I am not understanding all the details.