Truck intakes for the 5.0 or 5.8 have the square ports and won't bolt up to the car intakes or GT40 intakes. Car intakes (rounded ports) are several inches lower than the truck intakes as are the GT40 style ones.
Is it for a 5.0 or 5.8? The only 5.8 lower you can get that works with the non truck style intakes is the GT40 style out of lightnings or Cobra R mustangs and are not cheap. There is an adapter to put car intakes on the truck lowers but that kind of defeats the purpose of the low profile.