Turbo oil feed and return

Ok im getting closer to putting this turbo setup on the slant. Turbo is on its way. However im wondering where to tap for oil feed in particular. I suppose I could tap the pan for return. I read that some people are using a sandwich adapter that goes between the oil pump and oil filter and apparently it has provisions on it that allow for sensors and the ability to tap it for a feed line. Feed will need to be pressurized right? I've heard of people tapping the oil pump itself but I don't know where on it to tap. Where are you all tapping for the feed and return?