Im order to get that many horses, you need to port the heads and even add a cam. Check out supersixmotorsports.com . They have ported heads and intake packages.
__________________ 2002 Auto V6 Mineral Grey Mustang:
Go mods: U/D Pulley, BBK CAI and 65 mm TB, Pypes Violators dual exhaust with stock cats and an h-pipe, upper intake spacer, j-mod, SCT X3 tuner, and 3.73 gears and t-lock.
Show mods: Sequential tail light kit, GT fog lights, 8" shorty antenna, hood shocks, HID headlights, 17x9 inch Mach 1 rims wrapped in Vredestein Ultracs, and a chin spoiler. | 
Ported/ polished manifold. 
