I can't say for sure with just the torsion bar bushings but for the suspension rebuild I did on my W123 it felt like a totally different car. I'm sure new torsion bar bushings were helping...

Take another look at how the suspension parts connect together - new bushings on the upper control arm are certainly going to give a more positive feel - and any sloppiness in a longitudinal direction would be improved with new bulkhead bushings.

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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!