A 3645 (with 6.5 MWords main memory, FPU and 2x180 MByte Maxtor disks) and a 3640 (720 MByte drive)
A 720 MByte Disk Drive
A card for 2MWords (36 bits per word) of main memory in a 3645. The Macivory Model-3 (see the Macintosh fx below) has 8MWords (48 bits per word) pick-a-back on the Nubus card.
This was a dream in 1988.
Cards for a 3640/3645