OK, for you fellow freaks doing this swap too, I found the correct o-ring adapters to use on the GM/Denso 10S17F and 10S20F A/C compressors. These mount to the compressor and allow you to adapt to standard #8 and #10 female o-ring fittings.
http://www.nostalgicairparts.com/air...apters-592.php
As well as
http://www.coldhose.com/cat/compressor-adapters-25.php for $24.99 for the pair, part number GM1605.