There is no advantage to a "cold air kit" over the stock setup with a high flow air filter. The stock system takes air from the fenderwell just like the cold air intakes. The major restriction in airflow is the filter itself, so spend $35 on a K&N filter and be done with thinking about the air intake. Concentrate more on getting that power to the ground. You can spin the wheels with 400hp just as easily as with 1,000 hp.