A storage device data recovery service that has been around since 1985:
"Drive Savers"
https://drivesaversdatarecovery.com/data-recovery-services/devices-supported/external-drive-data-recovery/
I have never used their services myself, but they advertised handling SCSI drives back in the day, and given their business, I doubt they throw away outmoded gear - can't hurt to call 'em and ask.
I tried that imgur.com link and got a 404 - no image there.
An Ultra320 SCSI drive should have either a 68-pin or 80-pin SCA connector on the back, and will be "low voltage differential" (LVD) - an Ultra80 or Ultra160 SCSI controller should be able to talk to that, i.e., the drive should be able to negotiate the link speed with the controller and downgrade appropriately. I might be able to cobble something together from the junk I keep too much of to try and read the drive if it will spin up and talk, but an outfit like Drive Savers will be much better equipped than I am.
This might also be a job for the restoration folks at the Computer History Museum in Mountain View, CA.
Erik Fair