Are you on about the selector shaft roll pin which are bad for shearing on these?You can`t get roll pins for these and you have to take the whole housing assy.which is very expensive and a scrappy may be reluctant to break up a g/box for parts.I have used a hardened bolt in its place before and with a bit of loctite it worked out ok or you could try an engineers for a roll pin.
cdc
October 2012