Anyone have a recommendation for a balancer? Is the stock one good for anything?

Was watching Tom's turbo 250 dyno videos from a few years back where that engine was making peak power at 5600rpm. I don't see any reason this engine couldn't hold up to those higher RPMs but I know these i6s have vibration problems in those upper RPMs and I figure a better balancer like the TCI rattler might be a good investment.


69 Buick Special Deluxe. Intercooled Turbo Chevy 250 @ 15psi on a stock long block. It's kinda fast.