You'd think JL would include the piece
It would have been nice, but I can see the rationale - as far as I know, only the Eddie Bauer ed. and Ltd came with the premium sound system (hahaha what a joke!) that included the sub - all other models have a factory pocket, that of course has the trim piece required. As Ford wants over $200 Canadian <insert U.S. dollar jokes here> for it, it's understandable that JL don't include it - pretty hefty tab for everyone to pick up, just for those who have the ltd. or Eddie Bauer ed trucks..
If I had read the .pdf off the web site first, I would have picked up on it and got one ahead of time - wrecker only wanted $20 for it anyway....