My plans for my SVT include just about everything you can do to the engine and still keep it NA and I think it's capable of making upwards of 250~270bhp at the flywheel with all the bolt-onís, cams (when they are released), valves, P&P and the proper tune, this translates to roughly 225~260fwhp with the right clutch and a LSD.
If you have the money and can afford it then it's totally worth it, it increases drivability, cornering capability, acceleration and transmission response, but the Quaffie does run nearly $1200 and the Phantom-Grip is almost $700 so itís a lot of cash. If this is just your daily and you have no plans for racing/auto-Xíing etc. then itís probably not the most necessary item.
K&N Filter, EBC Pads, EBC Slotted & dimpled Rotors, FR Blue Painted Calipers, Spec Stage 2+, Spec Flywheel, Torsen T2 LSD, Driver and Pass. Steeda Engine mounts, CFM lower mount, Ingals Torque dampner (modified to fit the SVT), CFM STS, 70% tint