im running one from rock auto for like 60 or so bucks.. came with bushings and ball joint. I figure if you can get them that cheap just replaced the entire control arm. Its far less work than pressing the ball joint out and you get new bushings too!
i ran one of these on my turbo car for a couple years and never had a problem. They fit well and are cheap.
94 Mx6 with a big sway bar. 12.86 @ 116 on an FMU...
Built buy Me, ebay and zip ties.