I fixed the one on my 67. Cleaned the rust off sprayed it with Eastwoods Oxisolv to finish off any rust left. I did not weld the small holes with my mig I didn't want the heat on the bow(just my oppion).I used Marglass Fiberglass filler and glassed in small pieces of metal where the small holes were. Marglass is water proof. Sanded, primered and painted without removing the header bow. Looked great and I think it was a very good fix. But I can't tell you anything about the repro's don't know anyone who used one.
Hope this helps.