if you have a heavily modded car ACT clutches are the way to go. i have put them in a few RX-7s and they are totally superior to stock in most all respects. if youre car is stock the only difference you will notice with an ACT is that the pedal is stiffer, and engagement is quicker. i have never heard of having to get a new pushrod with a performance clutch and i think the stock one would be fine.
Centreforce 1. According to them, its supposed to be an additional 30% hold. It certainly feels like it to me. It's been installed for a couple of months now. Still loving it, and it has given me more accurate control on starts (i.e. there's hardly any delay when I engage) and I can hold it on hills without falling back all the time like I use to. Prices are below. I bought/installed through www.masterperformance.ca