switch m46 to m47: is it possible??????

[sofiene]

hi i'am new member i need help
i really need help i have buy a 1984 760gle td with the d24t engine and an m46 transmission and the problem the overdrive don't work and no one here can fix it also i can't find no relay no solenoid to buy it so i ask if i can switch it to an m47 transmission because it is 5 gear without overdrive technologie ... is it possible
please help