5.9 Magnum engine timing cover swap

nearpar said
I am putting together a Magnum 5.9 engine with a V-belt system for my 65 Dart.
I put a small block timing cover off a 73 charger on it, however, the Harmonic balancer
will rub the timing tab. Do I need to get the older 273 timing cover without the tab to make this work? any suggestions?

Thank you in advance

View attachment 1715307979

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What diameter is that balancer?
I believe they need to be 7.25"
I used the same cover, and a profession products balancer on a 5.9 with no issues.