The front A-arms were tough.  We used 1/2" PVC as inserts/bushings.  In order to make them fit snug around the 5/8 bolt, Sam cut a slice out of the PVC with a hacksaw.  The PVC fit inside the 1" tube.  Here's a picture of how it worked:
Here's the fixture Sam designed for welding the A-arms.  note the 1/8 and 3/16 plate spacers underneath to hold everything at the correct height.  We had to rebuild the fixture each time due to fire damage from welding.  Solid bar stock inside the 1" tubing holds everything in alignment during welding, the wood block on top is screwed in to hold everything in place:
Here are the completed A-arms, with one taped and ready for welding the shock mount tabs:
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Here are the spindle brackets, which attach to the end of the A-arms.  One is done, one is clamped with spacers, ready to weld:
And finally, done.....
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