quick idea: why dont instead of spending your time and money rigging somethign up or renting a press, get it to the point where all you have to do is take the steering knuckles to a indy mechanic with the PROPER tool, and pay him 30-50$ to press in your new joints. That way, you know it is done right, and you still save a ton on labor. I had mine pressed out/in for my 300SD for 30 bucks.
just an idea,
Ryan

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83 300SD.......sold
96 integra SE....sold
99 a4 quattro....sold
2001 IS300.......sold
2002 330i.........current.
2004 highlander limited....current.