I have the Place Racing CAI adapter kit. It's the upper piping of the CAI but with a large JWT filter and velocity stack. I finally took pictures this weekend when I was cleaning the filter. The pictures show the velocity stack and the location of the filter
http://www.geocities.com/breaux124/Maxima/cai/cai.html

 

Looks good, man. I was actually considering doing that. I have the JWT filter, but it seemed too big for the wheel-well. It now makes sense, seeing what you did. Nice.