Sorry to bail in but to my (extremely limited) knowledge the AC-47 is not a 1968 but a 1965 plane. Then it was first flown and actually almost immediately used in combat. The idea of a heavily armed aircraft with side firing armament was already opted in the 20's though. Historynet.com had an interesting article about the AC-47/AC-130 programs, maybe it's still available.
Update: It's still available, just search for Spooky or AC-47. Actually the aircraft first flew December 15th 1964 and was used in combat right away! The setup was only tested before in the states on a C-131.
It's a shame it doesn't fit in AH's timeframe, but I'd except a beaufighter with an anti-ship gun or mossie with 57mm AT

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Oh Jeez, if I only had a rearview mirror!
Bies
And bring the A26 and Hurricane (Mk IIC/D) to AH!!!
[This message has been edited by YankeeStation (edited 08-28-2000).]