There were various aircraft types modified for carrying pax, one involved fitting a seat and small screen where the front fuel tank is in front of the cockpit, I think that was a Hurri. Mossies were used on VIP runs to Sweden, the VIP housed lying on a hammock strung in the bomb bay, one such pax being disturbed as the doors dropped mid trip.
Didn't Eisenhower use a modified P51?
edit: yes during DDay and the battle of the bulge, see
http://www.354thpmfg.com/media_thest...kdown_pt1.html
The Germans used to carry engineers in the tail boom of the FW190 when moving bases, but there were reports of some during DDay getting pounced by Mustangs and refusing to abandon their engineers to their fate.
There was an item designed for the Spit that was a glorified body bag with a loop on the. Front that hooked over the wing gun barrel tubes, it was built but funnily they couldn't find anyone to try it out.
From The Spitfire Story (Alfred Price):
Modification devised by Group Captain Barwell, commanding Biggin Hill in 1943, to enable a Spitfire to carry a couple of passengers. The man-sized canvas bag was laid out along the top of the wing. It had a loop to secure the forward part to the cannon barrel, and it was attached to the trailing edge of the wing inside the flap. It is believed the scheme was never air-tested with a live passenger for want of a necessary volunteer!
(pic from Public Archives of Canada)