So after much consideration, I decided to go from 3.73s in my 2017 PP to 3.55. I find that 3.55 with Torsen are a hard find because they were only available for auto cars staring in 2018 models. It just so happens that someone in my local mustang FB group is looking for 3.73s for his 19 PP auto so this is perfect and he has lower miles than me. At least now I can go to 18s without an issue with gearing.
My question is what is needed to make this work? To my understanding, auto and manual cars have different pinion flange as I think it differs by transmission and years. Is his diff aluminum or iron? I cant seem to get a concrete answer by browsing. Thanks for any help!
My question is what is needed to make this work? To my understanding, auto and manual cars have different pinion flange as I think it differs by transmission and years. Is his diff aluminum or iron? I cant seem to get a concrete answer by browsing. Thanks for any help!