Replace stock Harmonic Balancer?

As some of you know, I'm in the process of digging into my 340. Or maybe screwing it up...yet to be seen.

Anyway, I yanked the stock harmonic balancer. I'm wondering if there is any benefit to going with an after market one instead?

I'm trying not to spend more money on the engine. However, it id makes sense then I can.

68 340, internal balanced.
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