My neice and her husband have a 67 acre bush block near Colac in Victoria and I recently gave them a recently re-barrelled Furphy tank with 1942 castings of the end plates. They want to use it for a fire trailer so I'd like to fit it onto an appropriate era trailer.
A No.4 would be ideal. It doesn't need to have a body, but the mudguards would be good although not essential.
Diana