I've replaced the entire Front Suspension and Steering Rack on an '03 TrailBlazer LT 4WD. I neglected to take any measurements of the Lower Control Arm Bracket positions when I took it apart. I did count threads on the Outer Tie Rods, so I can get them back into the ballpark when I reassemble; close enough for the trip to the alignment shop, anyway. There are a few relatively easy methods detailed online for checking/setting toe-in, so I'm not too worried about that.

But I have no idea where to set or how to measure the Lower Control Arm Brackets, and I can't find a method for setting ballpark castor and camber well enough to get it to the alignment shop without excess stress. Should I just shoot for the middle of the alignment slots or is there a more surefire way of getting Control Arms located close to where they should be?