The A230 is a far superior transmission, and it is fully synchronized, unlike the older stuff..
To retain the column shifter;
The shift levers IIRC are slightly further apart on the 230, and perhaps a tad lower. So your shiftrods MAY not be the right lengths. The lever ratios will also be slightly different, so you will have to sync them up. This is just cut and paste work, you'll be done in a couple of hours.