The number of {HEAD ~ each type} of preassembled top frame unit maintained in stock ready for {TAIL ~ assembly} may be set in accordance with the demand for different range configurations  
The number of { HEAD ~ each type } of preassembled top frame unit maintained in stock ready for { TAIL ~ assembly } may be set in accordance with the demand for different range configurations
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH