{TAIL ~ Cylinder head} 15 may be made of aluminum or steel in {HEAD ~ the normal manner} 
{ TAIL ~ Cylinder head } 15 may be made of aluminum or steel in { HEAD ~ the normal manner }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD