if they did win:
1) who did they play
2) date
3) score
and finally
4) what was unique about the game?

they didn't make the post season much less play in miami in 1986, sorry

there were 3 games (all Super Bowls)

game 1
Super Bowl V
Jan. 17, 1971
Baltimore won 16 - 13
Chuck Howley won MVP from the Cowboys. Only time MVP came from losing team

game 2
Super Bowl X
Jan. 18, 1976
Pittsburgh won 21 - 17
Lynn Swann MVP

game 3
Super Bowl XIII
Jan. 21, 1979
Pittsburgh Won 35 - 31
Terry Bradshaw MVP
this game is famous not only for the future Hall-of-Famers playing in it. But also for the infamous dropped touchdown by Jackie Smith.

So recap: Cowboy record at the Orange Bowl 0 -3


EDIT: did you purposely misspell Orange???
Well I just don't know.............i've looked in some places, but can't put Dallas in Miami for a post-season game and not one of the three mentioned above....i'm stumped....you dug deep into the archives for this question....unless the question of "if they won" applies. Well they haven't ever won a post-season game at the Orange Bowl. So i guess i should erase my answer and just leave it blank.

1986
they won
24-10
first time a def. player won mvp

they lost super bowl X to the Steelers 21 to 17
Lynn Swann was MVP