Catimann

I'm new to this forum and am interested in WRX but Like much of what Subaru has had to offer. I had a wagon back in the 80's that was a great fun car. My question here is what is shared between the Subaru family? Most cars share parts or pcs to save costs so I would not be surprised if (for example) the rear subframe on an Outback would be the same as a Legacy or a WRX. Perhaps some modifications but in general the same basic unit. In this case I am talking about the AWD vehicles. Is there a site, such as RealOEM for BMW) that helps one find shared parts?