There is what I'm talking about. The PCV valve is a simple inline PCV valve that you can pick up from any parts store. It's purpose is to make sure air can go one way (so fumes and liquid gasoline don't find their way through). Then a simple inline filter helps keep dirt and dust from getting pulled into the tank.
As for the Kleen air:
Here is everything removed in the emissions removal. Circled in red are where the emissions lines hook into the Kleen Air system. In fact everything on the right side of the picture is the kleen air system (basically to allow air to be pulled into the exhaust). Kkim did a DIY on removing the kleen air system. It's really simple though as you block the line coming out of the valve cover and then plug where the line connects into the airbox. That's it!