Had the same problem as you, and decided to purchase new and used parts to make my own complete unit.
1. Found a decent used grill that had good stainless, but plastic was trashed.
2. Purchased a new plastic grill from LMC (it was OK, but needed a little trimming for the factory stainless pieces to fit correctly) the trim pieces that came with the grill were junk.
3. Purchased a new emblem (GM Restoration Parts).
https://www.ebay.com/itm/1983-1987-C...pj3:rk:76:pf:0
4. Then painted the new grill with the correct color before putting everything together.
5. Don't forget to purchase the plastic screw mounting tabs that are inserted into the grill to old it in place.
Enjoy,