Well i didnt wanna turn Des's thread into an arguement so I thought id open up this, My mates rx2 is registered as a 1.3L, It may be different for cars that did not come out with a factory rotor (non mazda in other words), And i know that the transport dept sez to double it but then why would they say this:
(TAKEN FROM QLD TRANSPORT)
Going by what everyone else is stating you cannot drive a rotary full stop if you get your P's in the period cause isnt 1146cc x 2 a 2292cc, Just something you should think about.