In my limited experience most people tend to notice a big improvement whether using SSL or Rutherford compared to their old usually tired setup, because for many the existing setup is tired and not operating optimally and hence often the reason why looking at alternate solutions.
So its often like comparing apples and pears..............often .comparing tired setup with new setup, and hence the improvements noticed even if going with the original setup rebuilt. They may notice considerable improvements just rebuilding their existing setup if its at the end of its life. I've always added brake reaction bars at the same time as a rebuild, so its often difficult to attribute what improvement is due to what components. The SSL setup is useful because you can raise the front by nearly an inch, very useful on low slung Roadsters. I have heard good reports on the Rutherford setup, he rebuilt my front setup on my Kent 4/4 just before going on a continental tour in the early 1990's and the change was very noticeable.
Last edited by JohnHarris; 14/12/23 12:07 PM.