if you want a sunn, i can find it for you at a very good price. (make me a pm)
for the fork sunn,
very short travel:
32mm-40mm-55mm for obsys carbon, obsys 40 et obsys 55.
on the carb and 40 there is a "anti-pompage" system.
i haven't obsys 55, but on SS 32 et 40 are perfect.
they are great if they don't lost oil and pressure.
if you buy anyone of them, keep your attention on this point.