Just fitted one this week myself.
Standard breather plate is fine. What made me fit it was I changed my inlets for some port matched ones and when removing the old inlets they were caked is oily crap all over the inside.
So I mounted a catch can in by the ABS pump, rocket breather into one connection and a pipe out from the other connection, vented to the atmosphere. Some silicone bungs for the pickups on the inlet manifold.
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