This is second hand info. There was a guy selling parts on Ebay that mentioned he had new fenders/hood on his own truck(55-59). I emailed him and asked how they fit. He was very honest.

He said he originally had a mix of old and new components and the fit was very poor. I don't know what his level of expertise was. He went on the say that he finally switched to all new components and the situation improved but still left something to be desired.

However from reading posts here I've learned even a GM fender can give you fits. I shall find out soon when I start to mock up.

Keith