Texas a/c restoration company

Why not switch to the much more efficient and less power robbing sanden style compressor?
The original V2s are dinosaurs and are heavy and bulky compared to the sandens.
I plan to switch to a sanden compressor when A/C eventually goes back in the Dart and possibly back in my valiant 4 door if space is available with a 440

http://www.bpeusa.com/BPEACmountingbrackets.asp
Was lookin at these myself for my Dart with a 360