Found a Good deal. Bullitt kit for 550! what do you think?

I believe that the bullitt intake does not make much difference when it comes to horsepower. But obviously, it would hold up much better than the plastic mainfold. The bullitt had 265 horses I believe, but it was in the tune, as compared to the 260 horse GT. Most guys on here will probably tell you that it is only worth it if you plan to supercharge your stang; for NA, probably not.

it is great for a FI car.

NA wont be worth more than maybe 10 rwhp. moneywould be better spent elsewhere