I learned this year on this forum about dynamic balancers on CV axles. @db4690 and other frequent contributors - thanks! A certain aftermarket supplier that has not been named sold me one without a balancer that had machined grooves around the circumference of the axle where the balancer would be. I don’t know how it works yet, it’s on the shelf. The new Hyundai part turned out to be maybe twice as much. To be continued.
Prior to this, I did rear CV axles on my Porsche and it was all do-able, straightforward.