Like many of you, I am trying to find a 3.23 set up for a 489 case and NO ONE seems to have one. What is everyone else doing to get around this? Are there any manufacturers/suppliers that you would NOT recommend going to (due to noise, wear issues, etc.)? What are your thoughts on USED units? And does anyone have the part number for this assembly? I don't want to get a 3.23 for a 741/742 case