I've come to the conclusion that my cab cannot hold my cooltube, vortex, and carbon filter. So I've decided, thanks to some corrections from members here, to have the carbon filter at the end, connected to cooltube, and mount the vortex outside the cab sucking air out. My only question now is where to put the filter in my cab? Should I mount it vertically in the back corner of the cab or against the back of the cab (between the cooltube and back of cab)? I think vertically in the corner is going to present less bends in the ducting, making the exhaust more effective. The only reason I hesitate is because of the surface area of the filter being blocked by the cab side and back.