and 32 project exteriorly of the second ladder member 26 it may be appreciated that the first and second ladder legs 27 include confronting cavities or slots that cooperate with cavities and slots of the second ladder member 26 and more specifically of the third and fourth extension legs 31 and 32 at least one latch pin 34 is mounted within the ladder leg 27 cooperative for intersection and engagement with one of a plurality of third extension leg slots 36 formed to a bottom surface of the third extension leg to lock and secure the second ladder member 26 relative to the first ladder member 25 reference to fig6 and 7 as well as to the fig8 illustrates the use of a first and second sleeve 39 and 40 mounted to an exterior surface of the first wall 13 to receive the 34 u 34 shaped handrail 41 that may be subsequently mounted to the respective first handrail socket 42 within the first wall 13 and simultaneously within the second handrail socket 43 mounted within the tailgate side wall 12 fig7 illustrates the use of first and second magnetic members 37 and 38 mounted within the cavity 17 positioned adjacent to the respective third and fourth extension legs 31 and 32 to maintain retraction of the ladder assemblies within the cavity 17 a magnetic cover plate 44 see fig6 is provided to cap and overlie the top wall 15 as well as the associated cavity entrance 18 to further assist in securement of the handrail 41 to.