I used to run Mad Racing Concept seats with Ebay floor adapters and universal sliders. They sit at factory height, I like to sit close to the steering wheel (on a quick release) and I'm happy. I've had them for years, but the company doesn't appear to exist anymore, and when the tree crushed my Camaro it took a chair with it. Now I'll be running NRG FRP-300 (Large) Buckets.
http://www.getnrg.com/index.php?rout...roduct_id=1255
I'm also 5'11" 170lbs and the old MRC seats fit me like a glove, I pick up the new seats next week.