went to this site to help identify which gearbox I have.
http://www.thezcr.com/forums/attachm...5&d=1138326085
mechanic told me it was "13.40 Revolutions = 4.25:1 Si"
gearbox code starts with s20, its a 92-95 si hydro transmission, has a 4.25 final drive.
gearbox uses the halfshaft too.
which obx unit does my gearbox use?


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