In all, the upgrade has included an external sata port and two usb 2 ports. It has also given direct access to remove the internal storage drive.
Originally I was making the outside in clear acrylic that I scavenged from a computer monitor, but it was too thick and brittle once melted/bent into shape. I turned to skirting the sheet-metal frame in plastic kitchen chopping mat. The leds are supposed to give a wargames or orac (Blake's 7) look. I got height by extending with brass extensions that screwed on to existing bolts, adding 40mm.