Well, speaking generically it could make sense,, and there is another tidbit of information , from Larry Bible,that the 240 four cylinder flywheel can be used on the 300 five cylinder... to me that means that the engine is internally balanced.. and the flywheel is balanced by itself..not a situation like many engines which require help from the flywheel to make them smooth... So your harmonic balancer may serve only to dampen vibrations ..,just acting as a cushion effect to keep them from hanging around.... and as a weight on the other end of the crankshaft to offset the weight of the flywheel or torque converter on the other end...
Does it have a key slot in it..? that is one way of attaching which would indicate only one way it can be attached...