I am actually about to buy a 2009 xtx after all with 35k km(thats what he says at least) completely stock so i can do what i want, About the holes in the air box i actually did not find enough info, i also found out that stage 3 is not sold anymore and its actually rather expensive( maybe 600 euro for used)... so when the time comes i will have to come looking for more info about the holes drilled. Thank you all for your answers, the cush drives i am looking how they are named in my lang ...