I would not attempt it without a jack (or two, actually). If only the transaxle needs servicing I usually leave the driveshaft in place and only undo the 3 bolts securing the driveshaft to clutch yoke. Then I undo all dedion and transaxle "connections" with jacks supporting dedion and transaxle. After that the whole dedion+transaxle assembly slides straight back an inch or so to free it off the driveshaft and you can lower it and slide out. Installation is reverse. I usually have a jack stand or other support on rear half of driveshaft. Having someone with you that has done it before will speed up the process quite a bit. Other people do it differently, but this is my preferred method.
Besides drive shaft, you've got:
- shift linkage (tap out pin on 75/Milano, undo 2 bolts with 13 mm wrench on GTV6)
- clutch flex line
- brake flex line
- reverse light wires
- speedo sensor wires
- brake pad wear sensor wires (if your have them)
- ABS sensor wires (under rear seat on 75/Milano if you have ABS)
- shocks (at dedion)
- watts linkage (at chassis)
- rear transmission mount
- 6 bolts securing dedion x-member to chassis
to disconnect. Along with what I forgot in the list above
This is not easy to do alone - I would say two people are required when you get to the point of lowering it out of the car.
Once you have the assembly on the ground you can separate the transaxle from the dedion easily by undoing:
- 2 front tranny mounts
- half-shafts
Jes