that is an AC firewall & you have an AC box. Just bolt it up, problem solved.

Check the vacuum pods before installation. Mine leak at the shaft seal.

Unfortunately no one makes a modern AC conversion kit for cars that already have AC. I'd love to have electronic actuated air blend doors instead of leaky shaft seals.

Next step for you is to determine what you want underhood. engine/carb combo could affect this decision.

Do you want V belts or serpentine?

Do you want factory V compressor or Sanden?

After figuring that out you just need to check if your missing any pieces, find them, and bolt it all together.

Do you plan on using a rallye dash?

Tav