Plastic Connector to Power Brake Booster. 3 options on RealOEM, which is correct?

[IS300E30]

There are three #5 options on RealOEM (screenshot attached), which is the correct one that I need for my 7/1987 325i Convertible?

What is the difference between the three (other than one being a straight connector)?

[Vincenze]

The one with the picture is made by Girling (34331158930), the other is by ATE.

[uturn]

There was a post where someone used an elbow check valve from a newer model ... e36? And was able to eliminate one hose.

[IS300E30]

The one with the picture is made by Girling (34331158930), the other is by ATE.

How did you know which one was for Girling and which one is for ATE?

If that is the only difference, I just need to check which Power Brake Booster manufacturer that I have, and then order based off of that?

[Vincenze]

How did you know which one was for Girling and which one is for ATE?

If that is the only difference, I just need to check which Power Brake Booster manufacturer that I have, and then order based off of that?

Well, one has the name "Girling", the other "Ate".
They can be interchangeable, though.