Anyone have this piece??

Anyone have an extra piece that goes here? For some reason my brakes were gone, so I looked under the hood as I got someone to press the brake again. Turns out my brake fluid is squirting out of the opening onto my exhaust manifold.

Anyone have this piece or know what I can use to stop the leak? Thx.

http://i109.photobucket.com/albums/n63/MIKEandez/Nissan_46010_45P20_06.jpg

Use a spot weld? Or some epoxy

or tap the hole and throw a short bolt with a copper washer

Anyone know what that part is for?
Just curious.

I don’t see it on my Z32 BMC.

http://lh6.ggpht.com/_bPcbild_wyQ/SwoDHAvzl1I/AAAAAAAAAh4/Tf8JTkWC4q4/IMG_1138.JPG