It's a shame that the only commonly available example of the factory 5 link rear is the April 2018 to end of production Roadsters. I haven't seen a back to back comparison of same model v SSL conversion from leaf sprung Roadster. Certainly the factory ones have the four trailing links connected to substantial brackets welded to axle. A Morgan race car specialist has however driven my car and pronounced it more planted than SSL version despite the considerably greater torque of this model, which doesn't surprise me given above.
Ironically perhaps mine has been further improved by SSL dual rate and fully adjustable coil overs dedicated to the factory 5 link. The factory ones having too higher spring rate for comfort IMO but chosen to limit roll I understand. The SSL units as well as being softer on initial compression, limit roll to a greater degree, both of which are immediately felt after fitting.
