Passenger side crankcase vent
 

Reaching out for more information on crankcase ventilation, specifically to answer two questions.

First question is about the passenger side oil drain port on the REW block should that be opened and vented to a catch can?

Second question should the crankcase be under vacuum or vented to atmosphere?

Pic for your attention.
https://cimg1.ibsrv.net/gimg/www.rx7...951118e084.jpg