I have a 4 speed transmission out of a 1964 ford 2000,this will fit the 1958-1964 Ford tractors including the 600 and 800 series,2000 and 4000 pre 1964,these have the 4 cylinder engine,also if you have the selecto-transmission and would like to change it to a 4 speed transmission i have everything you need to do that..............4 two 3 five 9 six 7 eight 4 zero