the sphere is much the same as the citreon suspension setup, with a diaphram and pressurised gas on one side, fluid pumped into the other. it's mounted with 3 screws, rather than the citreon 'spin-on' setup. yes i did think of that if parts were unavailable/prohibitively expensive! the accumulator, bracket and pressure switch were £350ish from the good ole U S of A!
I was expecting a 'what is the box' question!!!!. the alarm box is mounted at the top of the firewall, and anyway, being an auto, the clutch reservior isn't an issue!!!
oh, the ABS is vastly improved in both levels of performance, and levels of silence!!!