Djs94stang

Just curious. Have you guys/gals had any problems with head gaskets? I drive a 5.0L with cast iron block and heads and they are bullet proof. It seems a lot of engines with cast iron blocks and aluminum cylinder heads have problems with head gaskets. I saw a while back that the 4.6/5.4 engines were blowing c.h. gaskets at 50,000 miles. Obviously, this only applies to stockers. The reason I ask is I know my 5.0 won't last forever and eventually I will be getting a newer model. Also, are there any other common probs with the 4.6? Thanks.