It sounded good but no e-tailer ever picked it up and never saw anyone in the forums with it.
BTW I just found this on @slingmods website, no info on it yet other than a very attractive price.
I've been watching that Injen info too. It has been there for awhile now. I see nothing on their website. Funny, I don't even own a Sling and yet I keep tabs on certain mods......good grief.