Upgrading AC and PS System?

[GBCustoms]

Hey guys, My 66 Burb came with factory AC, PS, And Power Brakes. I bolted up a 77 C10 Front end for the brakes and and what not. I have a couple questions about the AC system and PS pump.

1. What is the best way to upgrade the AC system? (i.e. - what compressor, lines, etc)

2. Does anyone know if the ^^ Power steering pump will handle the 77 C10 Steering gear box? If not what have you guys used as a replacement?

Thanks for the help everybody!!