the only pic i could find from here http://www.remarkablecars.com/ppads/showproduct.php/product/4683/cat/all
When I first saw the title of this post I thought a visor would look really boxy on a '57 but after seeing those two cars I think they look pretty good.
Ya i,m going for the visor,where did you get yours shoebox,wagon looks great!! I like the yankee fender tribar mirrors.thanks to all dan