"cold air intake" piping size

and....done

(well almost, I still need to buy some vacuum hose to run around the cut edge, so that it doesn't damage the pipe as the engine rocks, but for now, there is some electrical tape on there)

1470259101_zpsrrxsk9bt.jpg

it took a LOT more cutting to get the bottom of the holes to nicely follow the tubes, but 2 dozen cut of wheels on the dremel took car of that

what you cant tell from the pictures are the two 90 degree silicone couplers hidden inside the fender
these are pointed forward and slightly up to keep the road debris, kicked up by the wheels from being sucked into the engine
they may or may not also work as a little bit of a ram air intake