Generally triangular, {HEAD ~ forwardly opening u} shaped {TAIL ~ hitch} supports 34 and 36, respectively, are integral with and form forward extensions of the stiffening members 30 and 32 
shaped
Generally triangular , { HEAD ~ forwardly opening u } shaped { TAIL ~ hitch } supports 34 and 36 , respectively , are integral with and form forward extensions of the stiffening members 30 and 32
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH