most people just block off the port that the black box goes into...they replace the 2 big plugs in the back of the engine with vacuum style fittings OEM from honda that screw right in and use that shit as a drain back. Putting the larger ports in the valve cover works because the block has big holes connecting it to the head where the blow by can go. there is 2 big filters on the side of it now for the pressure to vent out while the oil stays in the can, the can is baffled.
Heres my can that TDF made me earlier this year, im sure it holds about a gallon for whatever reason...that would take me just about a full season to fill up.
Heres the lines running to it.
Im going to get the fitting for the back of the block and modify it with an AN style fitting so i can run a line directly from the back of the block to the can for extra venting and block off my black box.