So at ride height the rack and tie rods should be straight across?

The ball and socket is very close to if not in line with the lower control arm pivot

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Yes you want the rack in line/level with the outer
tie rod ends. The closer you can get the inner tie rod
ball and socket to the height and in/out distance of
the inner lower control arn pivot the better, it can
be forward but the up/down and in/out are important