The AC brackets are most likely Bouchillon. I'm planning on a complete aftermarket system for my '67 Barracuda convertible, but may piece some of it together.
Check with them ^^^^^^^
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5