{TAIL ~ The manifold} 46 may be made from aluminum, {HEAD ~ stainless steel}, or other appropriate materials 
{ TAIL ~ The manifold } 46 may be made from aluminum , { HEAD ~ stainless steel } , or other appropriate materials
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH