Been happy w/ my ACT Stg 1. It's seen ~30k miles w/ 5 auto-x events. PSI240SX (Jay in Orlando) ran it in his 400+ KA24 too. It's well known to handle more power than the 260ft/lb it's rated for.
Jesse
__________________
Ings RSpec, Built KA24DET, GT3071R
VR-4 AWD/TT Winter Sled