|Here's an external SCSI EZ 135:|
You'll need a SCSI card and 50-pin SCSI cable.
Here's an external parallel port:
which should be easier to set up. All the other EZ-135's on ebay are a lot more and probably won't sell. I imagine the two above will go for the opening bid or close to it or maybe not at all as there's not much call for them.
I have an external SCSI EZ 135 with no power supply and might get one on ebay. The parallel port lot is cheaper than a power supply by itself. So, let me know if you want the parallel port one above and I won't bid on it. Otherwise I'll bid on it for the power supply. I too have a few EZ 135 disks lying around.
You're not really green until you're soylent green.