The thing is, I live in sweden and that year there were only 24 600SX's released, all for racing use. Because of that the thinner head gasket was used on these sleds. They also had mph gauges instead of km/h ones. So the question remains, how many hp does this engine have?
But thanx for your answers, will probably gear & clutch my sled. I'm also going to buy a Maxximum Performance long-travel kit for the rear skid - lots of bad trails in sweden...