I have an Exedy Hyper-Single. It rocks, but is damn near un-streetable. I got mine used from a fella that lives in San Fransisco... had it for about 100 miles on the car and decided he simply couldn't live in those hills and still drive the car.
I don't blame him, as I can't stand stop and go traffic on flat ground!
So, if you're planning on driving the car daily, don't go too crazy with an aftermarket clutch, you'll probably regret it.