Observations on the 2021 HPP ... The Mustang is awesome! Pretty good mpg - that was not a concern -
no worries then spending more on premium grade fuel.

Is pretty fast! Very pleased with that With the lower temperatures, even in the dry conditions, the summer
only tires are very very very low traction - I plan to get all seasons asap since it is every day transport.

The rear is 3:55 - cruising 70 mph is about 2200 rpm. Not bad, but noticeable (I had a Neon
way back where 70mph was a bit over 3k!).

To do ... learn of torsen noises - makes different sounds than the posi in the 2011 ...
also rtfm, lots I should learn ... get the tires ... and the 2018+ pedestal spoiler is my favorite, shop for one
maybe pre-painted carbonized grey metallic ...

 

I put a Torsen diff in my 2010 and it definitely does make different noises and feels different from "normal" limited slip diff. I guess that's why they don't put them in the non-track-oriented cars. I wasn't sure if there was something "wrong" with it, but I guess it's "normal."