I am a 08 mustang gt with the cdc shaker with JLT Series 3 CAI, Do I need the tubes that run from the back of the shake to the air box

 

On My 07 the shaker came with it. You may have to cut a hole in the CAI.

 

I have no idea what the JLT series is but I took a few photos of my shaker hood connection to the box. It definitely comes in from the rear. Take a look if it can help in any way. This CDC shaker was installed by the dealer when the car was new back in 2007. The first photo is looking from the front, and then the 2nd photo is looking down at the rear connection. Click a few times to enlarge if you need to.