I'm running 2 set. I used 184-c first. then moved to skunk2 pro3 B series. The power moved 800rpms to the right of the graph but the 50mm itbs restricked me. I have another profile from touring car, 14.3mm lift but had to mod the valve stem seals and guide to accomodate that!!
Cory, its a 58mm at the throttle plate, as you can see, the plates is mounted not to far from the end of the setup. a perfect 2.5 deg tapper per side. Total length is 175mm to head face.