#3 on this menu from Honey Pig in VA - http://welcome.bz/serv/red/serv.asp
I think it's just regular pork belly marinated in a gochujang mix, but my Korean is a little rusty (i.e. non-existent) so i'm not sure. Out of the 3 or 4 places i've been in Koreatown, I never see it on the menu.
Thanks in Advance,