I think the also used the inertia valve on vans pickups for the domestic market.
An advantage of inertia valves is that the don't sense pressure & rely on an appropriate load on the rear tyres to avoid skidding, so they aren't as application specific. Any inertia valve could be made to work, but the Mini one is a great design & value if it's available.
Neither my pickup or my van had the inertia valve. They both had the FAM7821.
