I'm sure glad that Ford dropped the Tremec (made in Mexico) tranny from the Mustang lineup. I used to own a 2002 GT 5-spd that always had that annoying grind between 1st to 2nd and 2nd to 3rd shifts. Most everyone had the same problem.
I haven't heard any complaints from new owners so I'm assuming (hoping) that the new 6-spd is doing OK!?