I got these for the Miata, but my wife didn't like that the back wasn't adjustable (so she could see over the dash :D).
Both driver and passenger seat with pump lumbar support. Black, non-probax. They have added cushion in them from the previous owner (some sort of fancy foam that all the Lotus guys are doing).
They are comfy, super light and have taller head rests (which I found to be nicer than my NB seats). If you want to mount them to the floor you'll gain a TON of headroom (and I found the seating position to be quite nice. If you mount them to the rails you pick up at least 1-2" of leg room.
Selling for what I paid, $380.
I also have the sector 111 seat grommets for adding harness holes (http://www.sector111.com/images/prod...s/seatgrom.jpg) that I'll sell for $50 ($72). They're still in the box.
I'll include the bolted together setup I made to play with, but I recommend that you at the very least weld it rather than bolt it together.
Only thing I'm really interested in is a rollbar.
Pic of the seats (they are the two in the back, the pic is from the guy I bought them from, he had two pairs):
http://imgur.com/FSZku.jpg