I gave my machinist a control arm(stock datsun oem), and left it at that. He has designed many different suspensions for mini Mods, etc, so i know he knows what he's doing. The only issue I have with him is that he tends to over engineer (safety) things, and he is such a damned perfectionist. He has also done welding for the Government, so his welding is impecable.
This is the same guy who makes the R230 adapters, the TB adapter (240sx), and has made many other things for my car(s).
Here are some tasters. Keep in mind that these are not completed and are prototypes:
What you can see is the jig and the new outer section (the first prototype is still bolted to the arm). It will have delron offset bushings and camber adjustment at the outer.
Tim