Hello, first time poster on the forums, I drive a 2014 V6 Premium mustang with the pony package, and was curios if a ford dealer could add the performance package now (8 months after purchase), without voiding my 10 year 100,000 mile warranty along with life-time power terrain, i mostly want the performance package for the 3.31 gears. Maybe they can do just the gears? Has anybody ever done this or asked their local ford dealer?

 

A dealer will do anything so long as they are paid. However with that said, it would be a cheaper option for you to just buy the parts and pay a good reputable shop for the labor. Ford charges around $100-120 per hour sometimes more depending on the job.