FWIW here are some tank sender resistances not a full list of all though .
If anyone has some more please post them and will add to my list .
Empty Full All resistance reading approximate .
240 -- 33 ohm aftermarket gauges ISSPRO , STW etc US Standard
0 -- 90 AC type gauges (GM)
78 -- 10 FORD or Chrysler US
0 -- 30 OAC match ( old GM )
10 -- 180 VDO match responce ETB , European Standard
340 -- 30 Ford UK Sierra etc
260 -- 20 early Smiths , Some ETB , Ford 1982-1986 Sierra
Mike