anyone know where i can find a hood scoop like this?

hey guys, i need to locate a hood scoop that has a height of 4.5"-6", and a length of 12-15", also the width should be no less than 6". anyone know of where i could find such an item? (im looking to make myself a homemade ram air intake, & im lookin for a scoop that can easily house the filter, so that the faster the vehicle moves, the more cold air gets rammed into the engine). i already have a cheapo cai & im not too impressed with it, although it did help. also, i have looked on ebay & so far have had no luck.

thanks guys