Great Idea, But No Plan (Yet) Help!!

[mhicks]

I think I have a great idea but haven't figured out exactly how to do it. I have seen the commercials that have a trunk in the bed of a truck. I have a '73 with a wood bed. I am planning on replacing the wood bed soon and would like to implement the "trunk" into the bed. I would like to put it behind the rear-end and would like it to go all the way across the back of the bed (within a few inches from each side). I would like to continue the wood bed across the top of the metal or aluminum box that is mounted under the bed. I would also like to continue the metal strips ocross the top of the box box. Maybe outline the outer edge of the box with the metal strips also. I have thought on this but I think I would need a hinge that pops up before it starts to hinge back. Is something like that available anywhere? Any Ideas? I was also planning on putting a flush lockable latch with a half circle handle with a ring that wil lay down flush. Help me out!! Any Ideas?