If you go reproduction,you will probably spend about $325 - $350 for the fender & maybe $50 - $75 shipping or about $400.00 possibly more. At $40.00 per hour that is a lot of repairs to cost more than replacement (10 hours).I used to be a bodyman and I can do a lot of work in 10 hours.If the fenders are not rusted,just dents, I would go for repairing them & keep it original.

1957 Chevrolet 1/2-ton Stepside LB in the Gallery
My Photobucket shots

The person who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself." - John Stuart Mill (1806 - 1873)