In Thud Ridge the USAF player can deploy tanker aircraft for re-fueling, with the suggested model being the B-47 Stratojet. This wasn't used as a tanker in the Vietnam war, so I decided to try to find something more appropriate. It was a happy coincidence that Remi posted about the Schabak diecast airliner range on his excellent blog 1/600th Aircrafts available on the market – Load And Return (wordpress.com) which gave me the idea to look for a Boeing 707 model to use as a KC-135 Stratotanker.
The Schabak models are collectible so can be quite expensive, but I found one for a tenner plus postage, which isn't too much of a hit to the wallet as I only need one of them. It shouldn't be difficult to modify it into a tanker, with the undercarriage cut off and a re-fueling probe added to the back, although it really should have a shorter length fuselage. I think it will look pretty cool. A big 'merci' to Remi for the idea!