I'd cut out the center ribbed part and weld the ends back together so it was shorter and fit inside the grill opening,least that would be easy and cheap, and you have what you need already.
Tube grills look okay, '54 chevies and desotos look really good too. Im either using a chevy, or a shortened and floated '54 ford grill in my car. Im not sure if I have the abillities to be able to do what I want, so I might use a '54 chevy.