For the reasons i explained here R.I.P Lucas starter (V12)i i have replaced my e-tyoe S3 starter by a new high torque unit and i have no regrets .
A full rebuilt unit would cost the double .
I kept the old (short circuited ) unit for historic purposes.
I have a spare high torque starter if anyone would be interested , I think.it is the model with 9 tooth pinion .
Rui