So car returned and have done 150 motorway miles today.
The ride quality feels the same, it’s very very slightly firmer but something i’d expect given any new shocks fitted and compared with 20yr old shocks. I would expect the same from new Lexus shocks being fitted.
The ride height has increased, much to my dismay! I can now get 4 vertical fingers between arch and tyre,
Still, I’d rather go with decent ride quality than aesthetics, so happy for this trade off, especially as the springs came free with the car.
i’ll report back after a few more miles, but they feel fine and the springs felt good around some local roundabouts taken at speed.
Brake pedal feel is also much improved after new discs and pad, removing the previous slight amount of play before they took effect.
Happy bunny so far.