I should probably say that I don't actually have the car yet, but this discussion is of great benefit in deciding what to buy. I'm now thinking about buying a standard Roadsport and having it upgraded to exactly the specification I want, rather than searching for the perfect car.
From what I've read, the exhaust, porting, and Cams would be the first things to look at, probably in that order. I like the look of the K13A upgrade.
Thanks for all of your input.
Rob.