After the introduction of the 70 mph speed limit on British motorways the new speed limit was seen as a target, any vehicle with a top speed lower than 70 mph was seen to be slow, with this Reliant increased the engine size to 701cc and 31 hp, the new engine was then used in both the Rebel and the Regal. The latter model was then named the Rebel 700 in time for the October 1967 London Motor Show. The larger engine gave the Rebel a top speed of 70 mph and would later be fitted into the Regal three-wheeler becoming the regal 3/30.