ATR made one at one time, not too cheap as I recall. I did a home-made version by mounting 2 duct kits into the spoilers. I put a tranny cooler behind one and a duct hose to the K&N filter on the other. Worked excellent. The only problem I had was keeping the duct thing on the spoiler, the glue would dry out after a while. I still have them if you want a picture.