I've had the KSP for about three years and the boots tear too easily. You have to buy the replacement ball joints from KSP. The grease zerks for the bushings should be on top.

I just ordered these over the weekend. https://jbaoffroad.com/jba-upper-con...UaAo1SEALw_wcB

They are triple the price of the KSP but they are made in the USA and the ball joints are much easier to replace and can be rebuilt. Also, the grease zerks are on top of the arms for the bushings making them much easier to grease.