BMW seats
http://www.2002parts.com/html/recaro_front_seats.html
I'm actually leaning towards a pair of them in black leather because I find them more supportive and attractive than any other seats I can find that fit(I've looked at and sat in several options recently). Cool things about these seats:
1. They fit in the stock location, with what I believe is the stock slider track.
2. They are very low to the ground even with the tracks, in fact, you are less than an inch from the floorboard.
3. They have a side release that allows them to tilt forward, and they have a wheel that adjusts the recline. You can also pull forward or backward a leg support int he front. You can also get inflatable lumbar support.
4. They are very comfortable and suportive. I autocross all the time and anything more than a good shoulder/lap belt is unnecessary.
The major drawback is the price, around 1400 for all leather, half that for vinyl. Considering the other options, this is a very attractive deal for what these seats offer. I'll post pictures if/when I do decide to purchase these. Just letting you guys know of some other seat options. :)
More pictures:
You would have an original set-up though and you say they sit very low which address a problem that C4 and C5 seats kind of have.
Brent...











