Zip intallation on 3k

Just got a 3k with want to put an internal zip I have the zip drive already what else do I need to get this working ?

Step by Step instructions found here:

http://www.mpc3000.com/zip_install.htm

viewtopic.php?f=4&t=68300&hilit=scsi

How did you turn the external SCSI port around? You have to disconnect it from the motherboard? That is the only thing I cant figure out how to do. I have a 2000 Classic, but I need to flip my SCSI port.