I am working on replacing a bad wheel bearing and discovered some torn ball joint boots while in there doing the repair.  I believe I need to replace parts 9 and 17 from the attached photo to address the torn boot issues.
My question is two-fold.  If I am replacing both parts 9 and 17 should I also be replacing part 8 so that all the bushings are new at the same time?  Is there a way to check part 8 to determine if it needs replacement?  Second, I think this could get very expensive if I use all Porsche parts.  I see options for different manufacturers of these parts.  Does anyone have any experience with other brands such as OCAP, Meyle, etc.?
I am not trying to spend too much on the repair but also want to make things right.  I appreciate any advice people on this forum would have for me.
Thanks.....
