How many hours labour do you estimate to drop transmission on w123, change clutch and re-install??

I don't have specific info on your car. However on an older car, time to repair changes dramatically if it lived in the salt / rust belt.

I have done it in one day the 240D is easy to get to the transmission bolts

I think it would be doable in a weekend. I did a whole 5 speed swap in a W124 in a week so I would imagine just dropping the transmission for the clutch would be super simple.

For a garage with a lift and a transmission jack about half a day.

(Not sure if you're looking for quote related information or DIY related information though)

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!