Hmm, a Mk. 1 handle, I doubt there's many of those out there. However, I think a suitable looking handle could probably be fashioned from bits without too much trouble. Far easier than a Mk2/a one anyway. I'm sure if you have a look at the various images on riocar.org you'd be able to see what it should look like.

How do you get to PhD level CompSci without owning at least one null modem cable??????