[QUOTE=Ldub;227828]...the rest of the points you've made up until now are at least debatable, with a great many sticking points attributable to possible discrepancies in nomenclature.

But there is no "direct contact" between the springs/shocks & the frame, there are rubber spring isolators between the springs & frame, & every shock absorber I've ever seen has bushings in both ends.

But if what you've done is working for you. The shock and spring are transmitters between the body and frame unless something mitagates...thus the addition of the spring helpers. It's the meat in the sandwhich.