[Closed] Marzocchi RC2X questions

I bought some RC2X forks from an STW'er.

I was told they need a new oil seal but, which one? 32, 35 or 38mm?

Also, having read the online manual, trying to see which size oil seal I need, I have what might be a very stupid question. It says that the forks have a 6" post mount for the brakes. Is there only one 'size' post mount? I thought there was. I had Tech 2 (with an adapter) to run 203mm disks on my now sold Fox RL forks. Will the same brake with the same adapter run on the Marzocchi or are there other size post mounts.

Thanks,

Mike