I want to use my w123 parts car transmission in my w126 300sd, bu my sd has and electronic speedo, whereas the 300d has a mechanical. Is there any way to do this while still having a speedometer? THANKS

__________________
Regards,
Ian White

1995 E300 Diesel w124 OM606
2014 E550 w212 M278 biturbo

2001 BMW 740i E38 M62 (past)
1981 300SD w126 OM617 (past)