Mystery head threads...

[88LX]

i had the front of the motor apart and as i was putting it all back together i noticed on the driver's side head, right behind the AC, there is a threaded bolt hole and i cant recall what goes in there. thanks for the help

 

[Mustang5L5]

Front accessories mount to the threaded plugs.

 

[88LX]

im aware of that, im refering to a specific area. can anybody give me an idea?

 

[bynummustang]

Show us a pic.