Hey guys Hows it going? I had that problem too. Except my inner fenders are 54-55. The only difference between the two are the 54-55 has 3 holes running across the front lower portion of the inner fender's where the grill bolts to it. I have a set of 47 2nd series-53 inners I will look and see if they have those ame holes I don't think so because the grills mount differently but you know chevy- almos everything enterchanges.
Hope this helps.