[ages944]

Hehe, was thinking about something similar myself.

I don't think that a retrofit would work with the stock seats alone, beacuse the side bolsters that come with the lumbar of the sports seats are made for the larger side bolsters of the sport seats.

However, if you're willing to pull the tops of your seats off and buy the sports seat versions, then the lumbar thing may work. Go to realoem.com and take a look at the parts. You'll see what I mean. Definitely not a cheap fix either way though.

At least that's my opinion on it. If anyone else has a other thoughts, I would love to hear them too.