According to some of the good folks at Moparts it is, it would make sense if they did interchange being it is cheaper to manufacture one top that fits multiple tunnel rams. If it were me, I would order a gasket for the top first (if available separately) just to confirm/double check before ordering the top. In the street tunnel ram/STR series at that time they made a SBC, SBM, and oval port BBC that I recall. I think all three design had interchangeable tops. I had a 1987 edelbrock catalog way back when, so I am a little fuzzy, but it seems like they offered a top for a single 4500 750 street dominator and the two four barrel top.
