. ▁ ▁While ▁offered ▁sole ly ▁with ▁the ▁ax le ▁below ▁the ▁driver ▁( in ▁place ▁of ▁the ▁usual ▁set - forward ▁or ▁set - back ▁front ▁ax le ), ▁several ▁cab ▁configurations ▁were ▁produced . ▁ ▁Al ong ▁with ▁a ▁ 6 3 - inch ▁BBC ▁day c ab , ▁cab ▁lengths ▁of ▁ 9 0 ▁inches , ▁ 1 0 1 ▁inches , ▁and ▁ 1 1 0 ▁inches ▁were ▁offered , ▁with ▁a ▁mid - ro of ▁sle eper ▁and ▁a ▁raised - ro of ▁sle eper ▁( 1 1 0 ▁inches ▁only ). ▁ ▁While ▁sharing ▁a ▁ 2 - pie ce ▁wind sh ield ▁configuration ▁with ▁the ▁Century ▁Class ▁as ▁standard , ▁a ▁ 1 - pie ce ▁wind sh ield ▁with ▁ 3 ▁wind sh ield ▁w ip ers ▁was ▁an ▁option . ▁ ▁On ▁all ▁sle eper - c ab ▁variants , ▁the ▁Arg os y ▁was ▁offered ▁with ▁elect r ically - power ed ▁pivot ing ▁entrance ▁steps . ▁ ▁In ▁contrast ▁to ▁many ▁American ▁cab over ▁tr uck s , ▁the ▁engine ▁intr usion ▁inside ▁the ▁cab ▁was ▁largely ▁elimin ated , ▁raising ▁the ▁floor ▁only ▁three ▁inches ▁between ▁the ▁seats , ▁with ▁the ▁g ear ▁sh if ter ▁integrated ▁into ▁the ▁dash board ▁console . ▁ ▁As ▁with ▁conventional - c ab ▁tr uck s , ▁drivers ▁were ▁able ▁to ▁walk ▁into ▁the ▁sle eper ▁cab . ▁ ▁In ▁ 2 0 0 6 , ▁the ▁Arg os y ▁received ▁an ▁optional ▁minor