A stronger driveshaft would fall under the category of a ''would be nice feature", it does not fall under the "must have". Ford set the stock speed limiter to 115 or so for a reason so people don't abuse the driveshaft. For the 2011 v6 mustang Ford only offers a tune up to the 3.31 gear ratio last time I heard. So going with 3.73 like I have or 4.10 require a special non-dealership tune which they don't necessarily encourage or support. If you modify a car you have to look at all aspects and make a decision to modify weak points that can fail due to the modifications.
Yes, but it has already been covered in this thread that there have been standard DS failures, amongst stock cars, during normal driving conditions..... so.......... ?????
Current - 2013 Charger R/T Plus - 5.7L Hemi | Heated/Ventilated Seats | Heated/Cooled Cup Holders | 8.9 Inch Touch Screen | Electronic Adjustable Pedals | Full Memory Control Push Button EKF | Debating Exhaust.
Past - 2011 Mustang 3.7, Kona Blue, 6MT - | FRPP Sport Exhaust | Airaid CAI | OEM Black Leather | Boss302 Steering Wheel | Stack Racing Chrome Tower Brace | GrabberPony Custom Shift Knob | Rear Black Out Panel | Auto Headlights | 15% Tint All Around |