Gees, there's still a fair bit of money involved. $2500 upwards. And another thing I have to factor in is that I will be governed by the new P plate laws. But then again the cops won't really be able to tell that my motor is that modified will they? Are the YT heads look exactly the same as the stock ones? And another thing, if I get my motor rebuilt I would probs build it so that it can run on GAS or Unleaded or probably both. If the time comes, I'll probs just rebuild it to fairly stock specs, maybe a cam or something, I dunno, we'll see when the times comes. Thanks for the info Pub!!