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Here is the pictures.
pic 1 and 2.. that's where the u ( in your first picture) connected to
Pic 3 ( in red circle ) it's Y connector, one connected to fuel pressure regulator (in pic 4.) the other go to pic 5.
Pic 5. the right red tube go to EGR.
Picture's taken from 93 300E (m104 3.2L)
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