OK, I finally find someone I can help, If you go and lookup
www.truckandcarshop.com and you want to buy part # 85-30155 It's named 1985-87 Chev truck 85-88 blaz, sub, sub, crew it's $79.00 and it is for 2 piece grille. But once you get the parts, you'll get them with what looks like paper attached to the strip between the chrome, Do not remover the paper, it's not paper. It's what you paint, then simply cut off the excess. I almost removed the paper, but I thought I'd check with my painter.
I just bought a set for my 1988 K5 Blazer. It IS the right part, trust me, I've been down this road before.