66 Dart grill questions

Was wondering what is the best way to rebuild this grill. Its at the anodizing shop today having the anodizing removed. He told me that in order to redo the anodizing I will need to take the metal off the grill. Its held on by what looks like some very small rivets.
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If I remove them to paint where do I get this style of rivet? does it really even matter. I dont worry about original look but it would be nice to get it close. Also what color and brand paint do you use for the black backdrop paint they have on them. Guess I also need to cover the front of the car so when you look thru the grill you dont see white which is my body color.
Heres some pics of my grills. DSCN0372.JPG The one above and below is my original grill that was on the car when I bought it. If I can straighten out the center section of grill this one can be made to be very nice.
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The one on the right just above is the one I decided to have reworked.
I have bought 2 additional grills over the last 3 years in order to try to get a better one each time. I struggle with selling any of them in case of and accident but I guess once the car is completed I should pass them on to someone else needing one.
Let me know what I need to do next.
Rod