For Left Hand Drive cars (Cooper S and 1275s) up until the thermostat housing plate was introduced.
While it is true the early Mini setup with the 'remote' style gearshift is much more stable than the later model 'rod-change' design, they both suffer from a terrible habit of shifting around under acceleration, etc. The problem can be not only an annoyance but can actually get bad enough to crack the header or exhaust system. Carbs can often hit the firewall or master cylinders when the movement occurs! The "Ultimate" answer is to install new stock side engine mounts, an added top stabilizer (from the thermostat to the firewall) and a bottom stabilizer on the opposite side (from the tranny to the subframe). Our kit includes all the pieces you will need to do it right, once and for all time!