Does one use the factory A/C box when restoring a '65 Barracuda A/C ?

This '65 Formula S was equipped with factory A/ C but missing most underhood parts. I was wondering how one goes about restoring the A/C in a case like this? Throw everything out and start over with a complete aftermarket system or use the Mopar A/C box and adapt it to the aftermarket parts? Thank you.

I was going classic air but couldn't find anything that would work for my application. (66 dart /6 with power steering)
I'm doing a similar restoration on my dart. I'm using factory parts for the in cabin stuff and aftermarket in the underhood areas.
I have a parallel flow condenser. 134a style hoses adapted to the original evaporator core fittings late model sanden conpressor . I'm still scrounging for a mount for the /6 . I did have to modify my non A/C car in the blower motor area and the bulkhead connector had to rotate 90 degrees to help clear the gas pedal(switched from rod to cable) and the lower heat vents.