The original ultimate engine stabilizer kit fits all 1275cc cylinder heads for RHD cars without a sandwich plate fitted. See
MSSK1301 for sandwich plate type except Cooper cars 1990-2 that have
PEQ10019 thermostat and 96 on twinpoint injection cars.
It fits to the thermostat housing and end manifold stud and also onto the bulkhead where the heater pipes go through. For 850, 998, and 1100, see
MSSK1000.