The bbk one is changing to a forward facing throttle bottle! The trick flow is out! And ill show you the N/A numbers! The FI numbers are good too! Theres a guy on modularfords, that did before and after dynos with a PI and then the trickflow! He lost boost, but still made the same amount of horsepower! The reason he lost boost was because the more effiecent design of the intake!
i've heard of people on stangnet, mod fords, mod depot of a guy losing 10rwhp in the midrange.. But the FI guys are picking up pretty good power.
The bullit intake itself is $1400 for the lower and upper manifolds. Then all the other bullit specific stuff you have to have adds up to about $700. you can find bullit intakes floating around for $1000 or less, you just have to be patient.