Yes there original Merc gear box short 1 is 4 speed (mounted in my daily drive) long 1 is 5 speed (will be put in my project car)

Some information of about DOGLEG GETRAG 5 Speed EVO gearbox. This gear box is best gear box ever for W201 models and model code is 717.404 there is rate of Toyota R154 and Merc 717.404
Gear ratios R154--------------- Getrag dogleg
I: 3.250:1------------- I: 4.08;
II: 1.955:1------------- II: 2.52;
III: 1.310:1 ------------- III: 1.77;
IV: 1.00:1------------- IV: 1.26;
V: 0.753:1 ------------- V: 1.0;
R: ------------- R: 4.16
Therefore The 717.404 gearbox i hope can beat R154 especially for Drift
About my conversation of plate

it is hand welding adaptor plate for specially Merc 717.*** series gear boxes

without adaptor plate

with installed adaptor plate
