DVD-RW mod

I'm a little stuck on the DVD-RW side of things. I have four options on how to make the DVD-RW:

• Leave the DVD-RW out completely, use a USB/eSATA adaptor when needed
• Use a tray-load DVD-RW, mod the tray to fit the look of the case.
• Use a slot-load DVD-RW, conceal it behind a wall
• Mod a DVD-RW to make it more suitable for the look of the case

I like the last one; I like the idea of doing a top-load DVD-RW, but I have no idea how to make that work. Does anyone have a link to a top-load mod?