Yes, SCSI-to-IDE bridge card and home made 34-50 pin SCSI ribbon cable. Hard drive is an official Apple service part and came with bridge card already attached to the drive. Actually any 750M+ 2.5" SCSI drive you find is probably just such a beast. The hardest thing to find was actually the 2.5" -> 3.5" SCSI adapter bracket.
Macintosh Portable