Richard,
You covered everything I've ever learned very well. Except I've been told the the D0VE heads require less work to clean up the exhaust ports than others. Ford cast a hump in there that for some reason is smallest on the D0VE heads, or so I've been told.

Also, I need to tell some one before I bust and like to make people green with envy, Friday evening I was walking around an old back woods salvage yard and found a pair of D0VE heads laying in the mud. Got to go back for them tomorow. Unless something strange happens this guy will want about $20 for them. Wasn't in my truck or I'd already have them.