Mid engined madness

[gttouring]

after reading about the Micra racer with a nissan primera engine strapped where the rear seats should be (Ford Fiesta SHOgun anyone?) or Renault Clio V6.
what shafts are used to the rear wheels?
it stands to reason that the front end can simply be placed in a chassis in the rear and with no steering link present a bar place wheel to wheel can e place to control toe.
but would this be done so easy?
simply put a front drive engine/transaxle assembly into the rear portion of a hatch and call it a day, or are special halfshafts needed for the driven wheels?
and could the same hubs be used up front simply seal the shaft opening?
is could be great fun, if i can work it out.