The keyboard wouldn't be much easier, either. A hobbyist might be able to hack an adaptor between whatever keyboard you have (which VDT? VT100, or something else?) and then remap the crosspointing with software, but it still sounds easier said than done.
If all you want is to indulge in a little nostalgia, there are other options.
The one i have has a nice monitor on top of a thin box with the mainboard in that box and attached to the keyboard via a DIN plug.
It was the keyboard I was interested in. I had already looked at the main board and taken all the big electrolytics off it.. I parts scavange.