Hackettstown Ford . I bought my '03 there to fix the 2nd - 3rd gear grind I was experiencing. They replaced the whole tranny with a new one they got directly off the line at Tremec, never said a word about my mods, see sig. The only comments were about how nice my car looked.
Stang01GT,
I heard that Downs Ford in Toms River is excellent.
A couple of the guys that work there have Mustangs that they race. Plus they sell a lot of performance parts, both Ford and others. I have heard of a couple guys that have mods to their Stangs and have gone there for warranty work with no problems.
Check them out.