I am getting ready to purchase a pipe and silencer. Ive wanted a ProCircuit for some time, but I rarely see one on a KDX. Is there a reason for this. Also, Im still not clear on what will work best, the REV pipe or the Torque pipe. While I dont like the fact that I run out of power in each gear in higher RPM's I dont want to lose the low end torque. Is there a nirvana, more torque and even a slight increase in top end ???? Any help would be appreciated...