Overdrive/tranny matching

[Victor Hughes <hughes@scides.canberra.edu.au>]

First, thanks to all who answered my Rusty Block enquiry.

Next, my Series 3 has original non-synchro-1st gearbox plus o/d.  I have
been offered an all-synchro 'box from a later series.  Will the o/d from
the S3 fit to the all synchro 'box?  If not, I assume I could just leave
out the o/d and fit the all-sync box with its standard rear extension
housing?

Thanks again

Vic Hughes