As noted, the first twin split MAN’s i drove were F90 but on an E plate (was that 86 or 7?), previously the 331 was indeed the fuller box, prior to that i drove a 232 now and again with the column change, whether that was 13 speed i can’t remember tbh.
I remember the 332 F90 didn’t have anything like the acceleration and sheer hill climbing pulling power of the F8? 331, but what it lost in power it more than gained in speed, having the dubious ability of cruising happily at 95 and i don’t mean kph either
As was usual in those days, you just got handed the keys to that column change 232 and just went and got on with it (not a bloody handbook or gearchange label to be seen), luckily i’d cut me teeth on S39 Fodens so anything else of the day was easier…however like everyone else i played quite a tune on the twin splitter before it clicked