dOk, after have the phatbox sit on the floor for more than two months, I decided to finish mount the Phatbox into the CD change slot. I bought 3M Mini D ribbon connector, use old computer serial port ribbon cable, and DB9 solder-on connector to make my new connectors.
I had to cut one of the plastic support bar on the rear of the CD changer housing to get the Phatbox to recess into the housing a little for the door clearance. I drilled new hole for the bracket as well.
I have attached the pictures.
New Mini D ribbon Connector
I used some hot glue to secured the ribbon on the box.
Front view with the cable routed to the front
I cut the cable comes with the Phatbox and put the new DB9 connector on it.
CD changer bracket modified to allows room for the connector.
Connected the DB9 connectors and installed the mounting bracket. I did have to drill new hole on the mounting plate.
Completed with door close.