As
@454cid noted, that extra fitting is the return line for the hydroboost system. I expect the pump is suitable regardless, but I've not actually confirmed that the non-HB and HB pumps have the same flow / pressure characteristics. I hope somebody else will comment.
I took a picture of mine, in this case of a 1998 L31.
My HP line is different in that it's routed close to the frame.
If you study these and compare to yours, I trust you'll see the difference. The pump isn't visible, the HP hose is, forming a high arch between the pump and the gear.
My low pressure hose, unlike yours, is routed from the gear to an OE tube-and-fin cooler mounted adjacent to the radiator. You can also see the return hose coming from the cooler headed to the pump.
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