That's the nice thing about the Mustang. It was overbuilt to a degree so that it can take the extra power and torque from a supercharger without requiring much else in changes. You see stuff on line all the time about people adding boost to their small little import 4 cylinder cars, and then they blow up or stuff breaks.
I saw a video on youtube recently of a brand new off the lot Hyundai Genesis with the turbochared engine doing doughnuts in the parking lot. 30 seconds into the video, the engine blew up.
In a mustang GT, you add an extra 150 HP * 100-150 Tq over the stock setup, and as long as it is tuned correctly, you have little to worry about.
2008 Mustang GT Deluxe, Black, Manual Transmission, Black Cloth Interior
Show: Katzkin Leather Interior, Matte Black 10" Stripes, NXT Step Performance Axlebacks, Pypes M80 Mufflers (mid mounted), CDC Sequential Tail Lights, 14" Shorty Antenna, Ford OEM Plenum Cover, Ford Semigloss Black Painted Valve Covers, Leather Wrapped OEM Steering Wheel
Go: Airaid Race CAI, BAMA Tune, J&M Lower Control Arms, JLT Oil Separator
Coming Soon: Motive 4.10 gears