It is a very good film. What I always liked about it is how tolerant it is. This means incredible push processing can be had with it. I'm pretty sure it's possible to send it way over EI 6400 is you don't care too much about smooth gradation and small grain.
For 3200, it's about 9:30@20°C in T-Max developer
So, for a 1 stop push to 6400 it should be the same time.
A 2 stop push to 12,800 should be 12:38@20°C
A 3 stop push to 25,600 would be 15:47@20°C.
I wonder if anyone has the guts to try these out?