Repairing a 1940 truck grille

[36couper]

I have an ad in the classifieds looking for a new grille for my '40
Last night I looked at it more closely and it looks like it is a cast grille. I've heard there are two types; cast and metal
If it turns out I can't find a new grille, how can I repair the one I have? There are 4 bars broken off the bottom section. It could be cheaper to repair than replace. There is a new one on eBay now for
+$600USD which is $780 CDN