I was not aware that the Front and rear axles had vents on them. I could always go the hole cut in the fender and the flex tube way, but i wanted a more refined look. If you have any pictures of this type of build id like to see them.Our Expedition Team always made our own. Lowes has everything you need except the K&N filter. Can be made for about $30. 2" or 3" (black) abs (plastic) pipe and 4 to 6 stainless steel (painted black) hose clamps. For those serious about keeping water out, you'll need 3/8 clear plastic hose to vent your trans, front axle and rear axle all hooked together and routed along the outside of your snorkle with it's own small K&N vent filter.. Clear hose is better than the black hose because you can see when you have moisture in the hose, therefore a leak. We beat these snorkles in the thickest of the Central American jungles and they performed flawlessly. If you plan on making your own i can show you a pic of how to hide the aluminum rivets on the stainless clamps holding the snorkle tube. Showed Slickstevio this trick on his front shock reservoirs.