I have a few suggestions, since you're asking...
First off, there are far better intakes out there than the Roush. 2 of the best include the C&L and the Tunable Induction intake. Both run cheaper than the Roush.
That programmer is over-priced too. You probably want to go with something like an SCT X-cal2 which retails for $379. If you buy a package deal from bamachips.com you can get the C&L intake and an X-cal2 loaded with 3 custom tunes for your car for $625, or at
www.tunableinduction.com you can get the Tunable Induction intake with an X-cal2 and 3 tunes written for the TI intake for $479. YOU DO NOT WANT TO INSTALL AN INTAKE WITHOUT A TUNE. Your car will run lean (too much air, not enough fuel) and you will most likely lose power rather than gain any.
Also keep in mind that any power gain you see will come from the tune rather than the intake. Most intakes are dyno proven to produce zero hp increases without a tune.
That Magnaflow axle-back looks pretty sexy though...
Oh and here are the links for the C&L intake/X-cal combo and the TI intake/X-cal combo. Doug at Bamachips is one of the best rated tune-writers out there and his tunes are supposed to be pure MAGIC.
C&L/X-cal2 -
http://www.bamachips.com/store/index...949fd06d4b9bb3
TI/X-cal2 -
www.tunableinduction.com
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Black 2005 Mustang v6, 5 speed, IUP, EUP and Leather.
Razzi 1/4 window scoops, Mustang GT Sway Bars, Flowmaster American Thunder Single Exhaust, Clear Front Turn Signal Lenses, Demolet CAI, X-cal2 91 tune, Hurst Comp/Plus Shifter, FRPP T-Lock, Ford 3.73 gears