Got the 2.0 into the Caddy! In case anyone else should ever need/want to do this (1.6CR to 2.0CR), there are a couple of things that need swapping over:
1. The hydraulic line from the clutch master to the gearbox is different. Luckily, it's very easy to swap over and the mounting points are already there.
2. The top gearbox mount is different (5 speed is two bolt, 6 speed is three).
3. There's an extra fuel pump bolted to the driver side engine mount, which runs to the HPFP. This is a two wire connection, so should be easy enough to rig up (I haven't done this yet but will confirm). I'm not entirely sure what function this pump serves.
4. The 1.6 coolant lines are a direct swap if you need them. My 2.0 was taken from a Touran with a parking heater which I'm not using, so I had to swap the lines over.
5. I'm not sure if the CV joints need swapping on this one (02Q gearbox). On the face of it, they appear to be identical to the ones I removed from the Caddy. The same can be said for the gear cable connectors.
My little VW breakers yard
I also fitted a Powerflex dog-bone insert as I've always thought there was a little too much rocking action on startup and pulling away from junctions etc. The standard mount itself is in good condition, just very soft it seems. Hopefully this will make a nice difference!