Don't even bother about using a ca16de clutch especially the centre force clutch, I used it on my fwd ca18det and it doesn't work good, it iwll start slipping around 8psi, I was realy disappointed in Centre force(I had centre force dual friction clutch).First the clutch is about 2 inches smaller than the det or ca18de, flywheel is very small and light compare to a ca18de and ca18det.
Do EVEN BOTHER WITH CA16DE CLUTCH EVEN IF IT IS FREE especially on RWD ca18det engine.
I am using a clutch called BULLY CLUTCH, it is made here locally (Ottawa, Canada) it is stage II full feramic clutch, dual spring.I boost on take off at 18psi and that it is taking the beating for the last 2 years.I highly recomend them, I can get you guys some discount, find out what prices they give you and I can beat it, I buy lots of clutchs form them for customers cars.
here is there website
http://www.bullyclutch.com/
good luck,
PULSAR GTR