Yes I know I just resurrected an old thread. I just purchased the same Moroso breather can from Summit as well. My can is closed though (no filter attached) and located behind the driver side headlights. I have some questions for you Schmoo. If I understood you correctly you removed the stock breather chamber on the back of the block.

Where does your Moroso catch can mount to?

About how much oil blow by do you think the can catches with a gutted PCV valve?

If you gutted the stock PCV valve on a B18B, then ran a hose to a catch can with a vacuum source connected to the can as well, would that pressurize the crank case.

Here's a picture of how mine is routed. There's no breather chamber on the back on my block (00 LS). The Moroso can has been installed on my Integra for about a week and nothing came out when I drained the can. When I removed the top of the catch can there was a strong smell of a oil/gas mixture.