The 1996+ 4.6L DOHC engines love to rev.
If you are changing the gears done't go with anything lower than 3.73s and preferably 4.10s or if you run the drag strip a lot, 4.30s
As for the cold air and a K&N, swap in the K&N right away, the paper filter (stock) does not allow the engine to breathe very well. The cold air induction is simply an attmept to get colder (denser) air into the combustion chamber.
These cars really respond to both intake and exhasut side changes. With a set of pullies and a K/N you will notice a big seat of the pants difference.
Then swap in a set of 4.10s, and You "feel" like you've added 100hp to the car.
Then save your money and get the blower.
<BIG grin> you won't be sorry!
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