Hi
i have a Ek4 S4C vti Non LSD standard gearbox in progress of making a LSD one. I have the EK9 LSD and FD but i'm stuck whit a bearing problem:

oem EK4 91005-PS1-003 (40x80x18) Ball type (non LSD)
oem EK9 91005-P80-003 (40x80x17) Roller/Taper type
oem ITR 91005-P80-E31 (40x80x18/19.5) Ball type

Some diagrams and part no of the transmision

EK4 S4c non lsd

EK9 S4C LSD

MB S9B LSD

ITR

which one do i have to use in the vti S4c gearbox? In all the pictures of the ek9 S4C gearbox i also find some shims that go with but i don't know if only goes for the roller type or also for the ball type bearings? Or just swap de LSD and FD and be done with it.
for the ITR one i know is a different tipe of gearbox so they will be different and will exclude that one

I was wondering are there any other wear parts which would be worth changing out or at least look at while im at it... like oil seals , other bearings , etc.

Please Help

 

Normally you'd use the ball bearings as they're easier to shim.

 

Use the B18C ball bearings.

I'd change the ISB/seal and axle seals while you're in there.