National Van Builders' Executive Series van uses a 5.4L V8 engine with 255 hp and offers 60 cubic feet of cargo space. For more information, please call 800.527.7477 or email [email protected] National Van Builders' Executive Series van uses a 5.4L V8 engine with 255 hp and offers 60 cubic feet of cargo space. For more information, please call 800.527.7477 or email [email protected]