XM with Alpine Head units (Possible???)

I've looked up and down the internet on hooking up XM Sat Radio with my Alpine IVA-W505 with really no luck. The manual describes in detail for Sirius Sat but vaguely mentions XM. It is possible, but it doesn't say what to buy or what to get for it to work. I've been on the Alpine website and it just seems like they are only endorsing Sirius. I might just have to wait for the Sirius and XM merge to get completed before I can really hook up Sat Radio to my Head unit. Any suggesstions?

 

You can do it, not sure exactly how....I am looking to get a 505 for my new truck. How do you like it? Do you have any pics?

 

I love it, I havent gotten around to taking pics of it yet. I'm getting the Blackbird II on friday so I will take some pictures then.

I've seen that XM mini tuner. I talked to Crutchfield about it since I bought my IVA-W505 from them and they said that it wouldn't work. I don't know why though, I just don't want to drop the money for it and it not work. I guess if I order it from them anyways and it doesn't work I could return it. Thanks for the replies.

 

So do you think this is all I would need?
http://www.myradiostore.com/xm-radio-receivers/xm-direct-2-tuner.html
http://www.myradiostore.com/xm-radio-receivers/cnpalp1.html