Update time. The transmission on this car needed swapping. The original has rust on the pulleys in the wrong places and consequently had become a belt eater - estimate of 4K miles for a pair.

Out it had to come...
I went down the road yesterday around 3.30pm to where I have my stash, and after a bit of chat, it was dark (maybe 5.30pm?) and I set about doing some work on the car.
Part one was to extract a good Vario out of car one. Outside, with it blowing a hooley. Seems simple enough, but it's sitting on soft ground and minus a front strut, so I can't exactly move it to the workshop to do it.
After a prolonged period of time (didn't really do much clock watching) and probably around 10pm I had the thing out.
This one is nice as the pulleys faces you could eat your dinner off. So clean! (as an aside, when did they get rid of those plastic fan blades on the inside of the primary halves? or are they missing?)
Some pics of the old one:
In the car:
nearside primary corrosion

nearside secondary corrosion

offside primary corrosion

offside secondary corrosion
I should of got some of the replacement unit, the pulleys on that are absolutely mint.
Part two was to extract the Vario from the BB (which was also missing both parts of the plastic transmission guard). The things that hampered extraction: couple of CV joint bolts - the socket heads were a bit mashed. Managed to get them out by reversing a 8mm socket bit (the bit that goes into the bit-holder is slightly over 6mm

). The pin that goes into the selector rod at the transmission end. The pin was seized into the small metal bush that sits inside the nylon bush. Work was a bit easier indoors and on the lift.
Decided to stack some tyres up
and dump the unit on the stack
Part three was to get the replacement Vario back in. That was a bit tricky. Decided on using a trolley jack as it is more manoeuvrable. Got it back in again, but had a few things to contend with that ate loads of time up. The killer was trying to sort out the pin to go into the selector rod at the transmission end.
The one in the car was damaged. It was one of those with a sliding clip into a groove in the end. However the opposite end seemed to be a small washer fitted in a groove and peened over? Either way cobbling it back together was rather fruitless as the head came off it

. Why didn't I use the clevis pin from the other car? Well when I took it out, I didn't lose the R-clip. But I didn't catch the pin, but it didn't fall to the floor. Then when I was doing another bit, I heard/felt it falling onto my chest. Then I could find the damn thing. After all the fruitless messing with the other pin, and several in the dark expeditions to try and find the old pin on grass. I was about to give up. Then I went for about the 7th visit outside and a smoke and found it at the back of the car! This time it was about 5.30am. Don't you just love those jobs that go waaaaay over schedule.
Last job was to adjust the length of the selector rod and everything was good on the way home. I didn't change the Roulunds belts on this transmission as there is a bit to go before they're dead.
Now I don't know why I took the "book of lies" down with me. It does give instructions on how to remove the transmission whole, but there are a few omissions.
Here's a quick run-down off the top of my head of the process:
1) Remove propshaft by sliding it back first off the front spline ad then forwards odd the rear spline.
2) Remove transmission covers inner and outer. (dropping the exhaust at the rear will give some more room)
3) Undo drive shaft coupling at the inner ends and tie back.
4) Unclip handbrake cable supports on rear Vario support bar.
5) Undo handbrake cable coupling above middle of Vario and move out of the way.
6) Remove selector rod pin from primary unit selector arm.
7) Remove selector rod pin from gear lever end and move rod forwards out of the way (or remove selector rod support bracket and take out the whole thing)

Remove both Vario F-R vacuum hoses from T-pipe in the middle.
9) Slacken the four outer corner mounting nuts and get rear to catch the lump with something suitable. WARNING! It's around 80kg.
10) I've probably forgot something, let me know if I have!
Edit: Forgot to add that I buggered up the two rear rubber mounts on the car. I recommend thoroughly cleaning the exposed threads first and soaking them in something like Plus Gas, rather than brute force

That way the bolts won't tear out. I bust both rear ones. Fortunately, rather than going out in the heavy rain that came later on to retrieve a pair from car one, I ventured into another barn to have a quick check in boxes of DAF 66 leftovers and as luck would have it, I'd saved all four from the crashed one. Save me a lot of time/drowning. The two front ones are smaller. All four are identical to DAF 66 ones (which is no surprise really).