Another thing I wanted to let you guys know the Caster Grenade pipe works awesome on the 3 and 5 ports, havent tried it on a 7. On my 5 it smoothes out the range and screams up top even better than the Dynamite 086 and gives me like an extra minute of runtime. I want to try the header off it on the Dynamite pipe. The pipes are the same length but the Caster pipe is much wider and has a taper at the end. the header on the Caster pipe is much longer and looks like it has 1 of them Novarossi extenders built in it. Its A good pipe. I haven got my 2072 yet still havent hit the states.