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The large port on the steering box is the high pressure input. The other is the low pressure return to the pump. The tube on the pump for a hose clamp is the low pressure return. The other on the pump is the high pressure output.
Back of pump(pressure hose) to larger inlet on box,usually the side closest to frame,
Return hose to tube facing forward,get the proper PS hose,not fuel hose
Third on the side is return port for Hydroboost brake assist, just cap it off if runnng vacuum or manual brakes
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Lm7 swap power steering lines 
