What balancer

I recently got this damper for my 5.9 Magnum build but so far I'm not super impressed, instructions had no mention of the weights and the weights themselves were printed with the wrong part numbers so I had to go searching for all that online.

PRW 2431841: SFI-Rated Racing Steel Harmonic Damper Small Block Mopar 273-360 | JEGS

I'd love to use an ATI but dangit I can't swing $350-400 for a damper. If this thing slips... "cheap parts are more expensive in the long run."