The 'wrench' area is so small on the ball joints plus you have those welded on spindle stoppers for the upper arms. Most bolt heads are at least 1/4 of an inch, even low profile ones. The balljoints wrench area is under 1/8 of an inch. If you buy a socket unless you grind down the face it's not going to work. Most sockets has a tapered section in the front and the area to grab is too small it will just slip off. Cut the spindle stop tabs off with a cutting wheel then just heat it up around the threaded section and use a wrench or channel locks as a last resort.