You would think after all these years and the demand (which would be high) they would release these finals on DVD.
They've never been released (someone correct me if I'm wrong) on any format.
The same with the 4 league cup final (6 games were played) wins from the early 80s.
The 85 final has been online a few times
As has the Gary Mac derby.
I saw the 90 FA cup defeat against Palace at thebox.bz this week.
Your best bet is to try at
http://www.fbtz.com/forum/index.php? Go to the classic games section.
Someone there about 2 years ago said he had the full game from Rome 84 and was going to post it.
It was never put online.