Check out any of the twenty-two Battery Case components enlisted.
In this schematic the "Bolt-flanged-small" is used most often.
Parts such as the Battery Case: Bolt-flanged-small, Cover,side,lwr,rh,bla, Tube-vinyl,5x600, Bracket,igniter are included in the El250e3 Eliminator 1993 Canada Battery Case parts fiche.