The drievshaft would contribute to it in all gears, but you may only hear it at certain points. Before you go buy a driveshaft I would have the dealer check it out and also look yourself at all the bushings, etc to make sure it isn't there.
Thanks for that advice, I appreciate it.
I did ask my contact at the dealer (who is a Mustang guy who I like), after he told me that there is no technical bulletin on the issue, if I should bother to bring in the car to have the issue checked out, and his answer was, "you could, but they'll probably just tell you that it's normal behavior."
Is this really normal behavior for this car, or is something out-of-spec on mine?
2014 Mustang GT Premium
5.0L V8, 6-speed manual, 3.73 axle
Mods listed in profile.
Ordered 2 June 2013 | Delivered 15 August 2013.