Yes you could load the scsi device from floppy, buuuut...
WHDLoad doesn't work with 1.x. So you'd be stuck on floppy games, though I don't think that is too big a hassle.
Transfare game .adf to cf card with winuae, wire .adf to disk, hey presto!
But I think if you wanted to do that, is best to ask someone to burn a 1.3 rom with the SCSI device already in it.
What I think is important is to find out exactly what this 2000 is. Could be a junk german motherboard with only 512k chipram and bad slots. Or it could be someone's 68030 Video toaster with SCSI. Who knows!