a housing being mountable to a floor of {TAIL ~ said vehicle} and located on opposite sides of {HEAD ~ said floor opening} 
a housing being mountable to a floor of { TAIL ~ said vehicle } and located on opposite sides of { HEAD ~ said floor opening }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD