Does anyone have any reviews or feedback on the HKS Hipermax II coilovers for the ITR?

I have done plenty of searching and find that they are a decent street coilover. However, I haven't found any real info on how they perform for autocross or the track.

Anyone?

Thanks,
David

 

anyone???

 

are they rebuildable in the u.s.?

if not, that's probably why no one has them