We live parralle lives! Just bought me a MD321T and Lateral custom 76mm inlet pipe. Not many 321T's with 76mm inlets about you know...
Anyway, the pipe you have should look something like this:
Its had all the breathers blocked off. you must run an oil catch tank with this pipe. DV wise, you just now run either a VTA or block it off as i have done.
Strongly advise block the DV off over a VTA with this turbo.