broken gearbox housing on my 1927 T, yesterday, I now need a replacement item, if you have one for sale, I am interested (only the housing, my gearbox is working properly).
Language clarification. Model T Fords do not have a "gearbox" per se. You likely mean the cast iron upper cover better known as a "hogshead" (in part because that is sort of what it looks like). The '26/'27 version should have two embossments on the top to bolt onto the rear of the engine block.
Nice to see another person from France posting on here! We do have I think three semi-regulars here from France already.
Michel: Do you ever get to Colorado. I have three or four 26 Hog Heads but DO NOT SHIP.
Tuckett brothers in England would be the best place for T parts for your end of the world.