Yes, you can use any SCSI drive. Dunno about those new SCA drives, since I haven't looked into what it stands for.
I used a SCSI2 drive, SCSI3 drive, IDE --> SCSI adaptor with my Blizzard SCSI kit. Heck, I even set up my first 9 GB SCSI3 harddrive on my A500 with GVP HD8+ SCSI controller.