{HEAD ~ Raised curbs} 69 can be added to {TAIL ~ floor structure} 63 and center frame 61 
added to
{ HEAD ~ Raised curbs } 69 can be added to { TAIL ~ floor structure } 63 and center frame 61
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH