I'll throw my .02 in there...Centerforce Stage3 flywheel/clutch combo was a definite 'thumbs-up'.

fwiw - I do 3-4 HPDE's per year & routinely outrun the porsches, vettes, & audi's at their own events + ~10,000 miles on the street. I'm looking to switch to club racing (ita) within 2 years. I drive my cars hard - period. Centerforce holds up VERY well.