You are VERY correct on those driveshafts... Lets just say a nicley built(but not even topped out) 2.5L N/A duratec has NO problem at all stripping every spline off the the driveshafts.... thats if they dont simply twist... Ive seen it. Our drive shafts are good for MAYBE 280hp in my guess.... even the hub/spindle strips.... lots of trouble in our driveline. They made our driveline to handle 170hp... and then later 200hp... Knowing ford cost cutting i seriously doubt they were overengineered for a car that was never really intended as a power house... Now... if mustangs and camerobirds were droping driveshafts with a 50% increase in hp it would affect sales... that same problem on a contique or cougar would not even come close to affecting sales.
