Last time I looked at a tugboat 8V vs 16V the set up was completely different and yes, that includes cable clutch actuation on the 8V and hydraulic on the 16V and IIRC pedal boxes too.
I can even see the cable for the clutch on your car.
the 16V WILL be hydraulic.
There are minor details like the mounts on the front of the engine, the o/s driveshaft, as well as the mechanism which are different 020 to 02A install, but obviously you've done all this research already, right?
Make sure you undo those hub bolts before you remove the gearbox or you might make a right mess of those 928 rims trying to get the hub bolts undone. You are going to put a set of shyte wheels on while you do the conversion, surely?
Given that you don't have any idea even about the sandwich cooler and what/where/why it might be an issue this conversion thread has the potential to develop into a proper comedy now, unless you're buying in the intelligence and real world nolidge to do the conversion.