The Conner CP3045 and CP3040 are the same hardware and platter with different controller boards.

In other words, take the board off your broken drive and buy one of these for a OEM looking replacement

http://www.ebay.com/itm/Conner-CP3040A-GLD02-40MB-Apple-50-Pin-SCSI-Hard-Drive-/291619718308?hash=item43e5e3c4a4:g:GzkAAOSwA4dWJZAW