Indeed, you could perform that act. Or you could salvage an HDI-30 female socket from a dead PowerBook and solder it onto a conventional SCSI cable (D-25 or D-50 "Centronics").
Don't do it yet. You are approaching the problem from the right way, but work slowly before you attack the kit that you care about. Experiment on some old radios or boom boxes. Learn how to solder a really tight, secure connection.