Let me first start off by saying the there ARE MANY DIFFERENT WAYS to install a catch can on a Rb20/25. I have a car in the project thread and I got 6 different PM's on if I can show how I installed mine. Well here it is.
This is on a Rb25
There are some people who say you should also put a mini filter(ie breather) on your catch can. I have not done this yet myself.
This Is on a Rb20
Any comments would be helpful. Also the next person who says, "SEARCH, this has been done before", Go straight to hell because the pics don't work and visual confirmation is key.