F.I.S.T.
An interesting 1978 pic, starring Sylvester Stallone as a Hoffa-like union leader, John Kovak. (And, he's good in it, too. You can actually understand his lines; he doesn't mumble them.)
There is a scene between Stallone and Brian Dennehy, in which they appear to be the same height. Dennehy (6'2", according to the IMDB) is at least four inches taller than Stallone (5'10", according to the IMDB.) (Personally, I think Dennehy is taller, and Stallone shorter, than their IMDB bios say.)