Does anyone know if the stock air intake housing and ducts from an 02 silverado 5.3 are the same as the 04 caddie 6.0? I did the search on the filter box and its the same but the duct is a different part #. Long story short, i have the k&n that isnt carb approved. Previous owner trashed the stock airbox. I cant pass my star certified smog because there is no e/o. Number so im on the hunt for a stock set up. I appreciate the help.