Art suggests sphericals are not best suited for street use and has the poly's listed as an option. Obviously he intends they can be interchanged even though the poly only has axis movement through deflection of the poly insert. Much the same as the mounting on the front of the control arm at the torsion housing. I was only curious as to your opinion of ... should we call it hard mounting as opposed to poly isolated. And would you also consider changing the front control arm mount to spherical ends?
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