H Crack in passenger dash

I bought my 06-RX8 last July and since I have formed the well known H crack in my passenger side dash.

Is there a good place online I can get replacement parts? if so links please.

Is there a best way to replace and a cheap way to replace? I hear there is a way to replace just the cover and not the bag and is cheaper, is that true? Or do I have to replace the whole thing air bag and all?

Is this something I can replace myself or should I get a pro to do it?

Can someone recommend a good mechanic in the Raleigh NC area?

Thanks
Paul

H Crack in passenger dash