I dunno, man.... I have a feeling I was right all along. This Blitzsafe one should work just fine, as it says it works on 6th gens with an indash changer.
http://www.logjamelectronics.com/bli...ink1dmxv1.html
What you probably need to do is pull out your head unit (or look at a schematic/ask a honda dealer) and see if you have an open 14-pin connector. It's a small wiring harness plug that's about half the width of the main one.