Don't know any A-1 type Skyraiders for sale, sorry...
There are 2 flying B-17's in Europe (as far as I know)...
44-8846 as 22960/Pink Lady.
44-85784 as 124485/DF-A/Sally B/Memphis Belle.
Said
here that Pink Lady will not fly after 2006 because of insurance problems. Might not even be a bad idea to fly it in Australia, if they don't have the same stupid laws that the EU has.