M7 resells Kerscher struts.
Kerscher used to supply H&R struts before switching to the awesome Koni/Eibach/struts..You want more SilverBullet? I'm happy with mine.
Red9 Design coil-overs are substitutes for torsion bars
and they sell joggled spring-plates.
Leda will make struts to your spec, anything goes.. external damper adjust, spherical end bearings, not cheap but not too common either.
Matt