Review on Boost Horsepower with K&N Cold Air Intake Kit for 2005-2008 FORD F150 (57-2572): 50-State Legal and High Performance by Juan Castillo

Recently purchased for a 2005 F150 STX 4.2L. I went to step 20 of the 28 step guide and found that the adapter is for a 4.6 liter engine but the packaging says it is for a 4.2 liter engine. I went to the local dealership to see if I missed anything. The mass air flow sensor for my car was a different design, so it didn't fit the adapter designed for the mass air flow sensor. I asked the seller for a 4.6 liter sensor and it looked like the one shown in the diagrams in the owner's manual. Because of this I have to return it as I cannot use it.