Hydraulic throwout bearing questions

100% better than the manual setup, but make sure to check for flex in the firewall, even better, do whatever you need to prevent it ahead of time.
I got the American Powertrain kit, but if you check with Brewer's, tell them what you have, mention concern about firewall flex, and I'm sure they'll get you what you need.
I have a HitMaster clutch/launch control setup (requires a hydraulic throwout bearing) and a McLeod RXT dual disc clutch system.
EDIT: FWIW I had a Borg and Beck 3 finger PP with about 3k clamping pressure, switched to a diaphragm style PP with about the same clamping force, and they didn't slip when fully engaged but were pretty brutal on my old knee. I got the dual disc out of necessity, but I am THRILLED that what I've read so many dual disc clutch owners say is true: outstanding performance but much lower force required to disengage and great performance. Add to that the hydraulic throwout bearing setup and I have the best case scenario: great clutch performance and smooth, easy operation.