I just looked in my engine bay tonight, and saw that a bolt head is missing of the exhaust manifold (I believe that is what it's called) The bolts all usually light up but I actually saw the changing pattern of read and white through the whole, which is in the center of where the head was. I couldnt tell if just the head is gone, or the bolt. Can anyone input on this ? It is the piece that is right below Cyl 1-4. Thanks, Edit: Sorry almost forgot it is a '80 308 GTSi which I think is a US version but there are many signs it's a euro, 80 was a odd year for many parts. Update: It is the exhaust manifold and in the parts manual off of Ferr UK it show piping going to those bolts, unfortunatly they do not have this part and I can't get the name of it or what they do?