Re: 2011 Mustang GT. Suspension Upgrade.
I have Eibach ProKit Springs (lowers the front 1"- rear 1-1/2"), Eibach ProDamper struts, Eibach adjustable sway bars, Maximum Motorsports Camber/Caster plates, UPR adjustable panhard bar, BMR LCA's and strut tower brace on my 2011 M6 GT. With 275/35 and 315/35-20 Nitto Invos this thing absolutely corners like it is on rails. My car is not my daily driver, but could be (the fricking loud exhaust would probably make me crazy though), it's a weekend toy but in fact, I will be driving it from Milwaukee to Myrtle Beach for Mustang week later this month. I may never "track" the car, but it is set up so I can, and every twisty road in this part of the state is subject to my strafing runs.
My point here is, Eibach stuff is really good, and I am not sure I would have my mind set on FRPP stuff without really investigating.
2011 GT M6 Premium- Mechanical upgrades include: Boss 302 Intake, JLT CAI, JPC LT Headers, Off Road X Pipe, and mufflers, 410 Gears, Granatelli Hot Street Coil Packs, 93 Octane Ghost Cam Tune by Jon Lund,Eibach ProKit Springs,shocks, struts and sway bars, BMR LCA's, Strut Tower Brace, and adjustable Panhard Bar, Maximum Motorsports Camber/Caster Plates, Barton Shortshifter and bracket, Wilwood Superlight Brakes w/6 and 4 piston calipers, Steeda Spyders- 9-1/2X20 with 275/35 and 11X20 with 315/35 Nitto Invos.