The Amiga 2000 arrived today. It came with KickStart 2.04 ROMs, and I *think* an ECS-chipset motherboard.
Now I just need an Amiga mouse, a SCSI hard drive (from my junk pile), and a set of Workbench 2.1 install floppies.
Update: Looks like the power supply is toast (no surprise; the machine sat in storage for 10 years). That’s not a problem – I’ve got an under-$10 bid now on eBay for a replacement, and if that falls through it’s an easy homebrew fix using a normal ATX power supply.