Spin on oil filter

[C1Nelson]

I have one of the Spin On Oil Filter kits on a motor I will be putting in my CCPU project. I also found an adaptor to change the filter from a horizontal position to a vertical position. The adaptor is a Ford oil filter mount #97JM6884AA. I know others have used this adaptor.

The adaptor screws on to the motor using a bolt that is the same size as the nipple on the valve cover.

Can someone tell me if the nipple on the valve cover can be removed?