"NOT" Like a glove

Thats a good idea. Using a.compact heat/ac ,unit designed for a hot rod then you can mount it anywhere under the dash. Vintage air makes these. Plus you can buy the fittings, and hose as seperate items and route them as you want. They even sell the swaged crimps, and tool to crimp the ends. A sanyo radial compressor is all aluminum, and designed to run R134A . I believe they sell this compressor as well . I think vintage air may even have brackets to attach it to your 440.

Hope this helps
Matt