Enjoying relative to what? I love the ride of the LWB 140 so I find a 124 stiff even on Bilstein comforts (confirmed). I run 205/55-16s which probably contribute to the stiffness but I don't recall it was much better on 195/65-15s. Handling is miles beyond what a 140 will feel comfortable doing.
Don't you have to remove the springs to replace the struts? There's your chance to replace spring boots. What else are you going to do with them?
Sixto
87 300D