318 Harmonic balancer recomendations

I used ot use Pro Products. I will only use their SFI ones now. IMO, for a milder build, use a factory unit in good shape. If yours is dry and cracked then replace it with another stock used one. If you "must" replace it, do not use a non-SFI approved one. The stock ones are hit or miss and the misses get really expensive.