A looong overdue update...
Last November I bought a 1041 axle because of its G80. Plan was to swap it in and be happy with it until I figure out the MK1 IRS swap.
See? G80, wohoo...
Sourced a V6 frot swaybar as well. At that time the car had none at front.. not like it has one now...
In 1 day's worth of job I could've transformed the handling/fun factor. Open diff and spongy, swaybar-less front end was a bit disappointing. But nooooo.
Friend came along and told me to do the IRS swap instead of the G80 install.... we had all the parts, so "yeah, why not", I answered.

Everything went downhill... spoiler alert, car hasn't been finished, yet!
Let me tell you, it is not a simple swap. First of all, the 940 wagons don't have the mounting points for the subframe on the rail... Lots of cutting involved... amd the trunk area is different from the sedan's trunk... Sedans are easier.
The panhard mounting "plate" has to come off completely... if You are lazy and cut only the driver's side part, the exhaust won't fit on the pass. side. And it is NOT fun to cut it out after everything had been assembled. Ask me how I know..
The subframe has 4 mounting points.
- the fronts are the ones with the spring seats, these are easy, 1 bolt (out of 4?) is present on the rail, bolt and weld around the bracket.
- the rears are those ones in front. They tie on the subframe and support from below... sorta... difficult to explain, look under a irs car and You will get it.
Again for the rear brackets there is only 1 hole (out of 3) on the rail. Worry not, drill and some bolts and be done. Or not. The middle bolt goes trough the subframe mouting point. So I drilled a hole for it. Went to the trunk to find "the other end". There are service holes on the rails, but not for the middle bolt. And since it is a wagon, the floor is different. There is no access for the middle bolt. Grrreat.
This is the "setup":
see the two service holes? Those are great!
Same from the trunk area, driver side:
Pass. side: (dying phone... sorry)
So, I have no access for the middle bolt, I can't weld a nut on the rail, cant put a nut onto the bolt or anything like that. I have to cut open the rail/floor to gain access.
I "think" I could live without that 3rd bolt... but I'm not happy about it... but don't want to hack up the body anymore either....
Oh yeah, the best part!! 1041 G80 doesn't work in the 1055(?) MK1 IRS. The halfshafts were wobbling around in the diff. This discovery was a bit demotivational...
Found a G80 that fits, Greg modded it
Next problem was the driveshaft. The flange was different on the MK1 housing. Thank volvogod, the driveshaft is 2 piece and after bit of yellin and hammering can be seperated. I used the back half of the donor car's driveshaft. Plug and play.
Everything went together... and by everything I DON'T mean the f*cking exhaust because it doesn't fit anymore...

And the damn trailing arms - shocks - springs are still giving me nightmares. Those were really PITA to install.
Didn't care, did some burnouts. Easy peasy... because my rear brakes doesn't seem to work...
Had about 3 degrees toe-out. WTF? Both toe arms were bent identically. Don't know when and how did that happen.... bent it back, car goes straight again.
Constant 12 or richer AFR. Thought it is a broken o2 sensor. Replaced it, still not good. Have to check the wiring.
During an ECU flash, one coil pack burnt down. Smoke and everything... car still smells like melted plastic.
Loud exhaust, faulty rear brakes, waay to rich mixture... I can't drive it on public roads. Lost a bit of motivation to be honest...
And in the meantime I bought a new (to me) DD:
2006 Alfa Romeo 159
2.4 5 cylinder diesel, auto tranny. Perfect daily driver for me.
It has pretty stiff suspension, 18" wheels with 235 tyres, 330mm 4 pot front brakes. Despite the heavy engine (heavier then the V6 petrol!) it corners pretty well. Pretty fun car to be honest.
It is fully loaded minus the moonroof, and Ti package (sport seats, black headlining, 19" wheels and lowering.. basically). Has waaaay too many gizmos to go wrong...
I don't have any pics of the interior....

looks the same, but black not tan and auto, not manual
So, the 940 is driveable, but neither safe nor quiet

I'll get back to it soon. Not much left to finish.