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From the pictures they don't look so bad. Why can't they be repaired by a good metal man? I used to have a 46 Chevy truck and repaired them myself and I am not that great at metalwork. Anyway check the link below. these are fiberglass, but the buckets only, no extras.
When I did my 46 I had the same problem. I went to a junk yard and bought the parts I needed to attach the lights from a newer car. First I measured and got the ones closest to size I needed. After some slight mods it worked.