Why limit the V6 to 115 if they are going to make a Focus able to reach 150+
The only Focus capable (stock) of reaching 150 will be the new ST (or the older Euro STs and RSs). Halfshafts are much shorter than the V6 Mustang driveshaft and are less subject to the harmonics and imbalances that would cause them to grenade. Whether the reason for going with the lighter-duty driveshaft in the V6 is cost-cutting or lessening rotational mass to save on gas mileage (ie the ability to advertise 30+MPG) is subject to debate, but the general consensus is that the V6 driveshaft is a weak point.
"We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin
2012 Kona Blue Mustang GT
Roush Phase 2 625HP Supercharger | Black OTT Stripe | 400A | 5.0L | 6MT | 3.55 | HID | SP | CP | BBP | EP | RVC
Mods: Forget it .... too much to list!