If you ever need to drain the oil to do an oil balance when replacing a new compressor there is an oil drain on our compressors. This is the 14 Compressor, think they are all the same.
Our compressors are Denso 6SBU14C variable compressor with a clutch
It is in the front and on top ( I was looking at the rear and bottom Duh!)
Here is the service manual diagrams kind of unclear.
Here are some actual pics: