oil pump for 66 nova...

I have a question concerning the oil pump for the 66 nova..I have the front sump pan and extention tube for the pump screen..everythings looking good...The question is....There's a bracket in the middle of the tube. looks like a mounting bracket with a 3/8 or 7/16 hole ...But I'm not sure if thats a support bracket or not...And if it is..What does it connect to ????......Hope someone can help me out on this one...I'm just about ready to install the pump and oil pan...........Thanks....