To complete the installation, you need to supply your own AN hardware and hose, as well as a small breather (I used a K&N). For hardware I needed a 1/4" NPT plug and two -6AN to 1/4" NPT 90 degree fittings. I have used Earls Ano-Tuff fittings throughout the OLC build but, unfortunately, none were available locally (one of the joys of trying to build something like this in the great white north) so I grabbed some traditional fittings from my stock to get things together for now - I'll change them out later.
First a plug for the extra/optional vent outlet, in an ideal world this wouldn't be here but it is and it's not much of an inconvenience:
I used 90 degree fittings top and bottom to mimimize height (and save a bunch over 90 degree hose ends). The "in" and "out" are clocked at 90:
