46Panel,
I am assuming by plater, you are having it done at a chrome shop?
You may want to stop by a machine shop to see what they could do with it. I just had my windshield frame welded up by a shop. It looked darn good for what I brought in. The place I used is in the middle of an industrial park and fixes all kinds of stainless, regular steel and alum. They finished it out as nice as a body shop.
It might be spendy, but worth a try since you are trying to find such a rare bumper...
Another try might be dropping an E-mail to Ray Stanley, formerly Metal Man on this site. He does not post here anymore, but is still around. He might be able to give you some tips too...
Just my $.02 worth..
