the ball joints are cheap, but impossible to get the old ones out in most cases. I had to pay $100 labor to have a shop do mine (just one) and they said it was even a nightmare for them.

I was even thinking motor mounts possibly, I hear they are nightmare to swap also

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2006 Audi A3 2.0t DSG apr stage 2
2002 BMW X5 4.4
1997 BMW 328ic sport. moreagrun metallic
1989 BMW 325is with / M50b25nv swap