Hi, I have recently *cough* put a ST205 motor and trans into my ST165 and I am having trouble with one of the 165 driveshafts fitting into the 205 box. From what I have read up it should be a direct fit for the 165 shafts but the RHS input seems to be narrower on the gearbox. Both the 165 shafts are the same width and the 205 shaft is a few millimeters narrower. Just thought I would post this in case someone has come across this before I start splitting driveshafts. Thanks This pic references the width of the 165 shaft to the 205 gearbox input.