Those newer systems have most of the components in the cab where ours have them hanging on the firewall "technically" outside the cab. You can probably make most of it work in the current structrure, but if you are wanting to integrate it as it I don't think it would fit, and if you want to use the factory controls that would be a completely different question.
A buddy of mine used the AC dryer, evap condensor from his 06 donor in his 67 truck but had to modify the factory AC box.