I spoke to one of the flight crew on the DC3 at the Redhill show in August - he said that to even think about being able to fly it I would need a minimum of 500 hours tailwheel (Chippy, Harvard etc.) plus a twin rating with min 50 preferably over 100 hours twin time. Oh yes - and know the right people and be very lucky!
Actually it is not all that difficult to get a type rating for DC-3s (which I agree is not most people's definition of a warbird), if you have the money to pay for it. Although I understand that
South Coast Airways is no longer in business, you can still go to
Pioneer in N.Z.,
Royal Aviation in the USA, or
Gateway Airlines in Canada.
P.S. See also
Airliners of America, which offers training on the Martin 404.