I am considering full exhaust upgrade along with a tune and pulley changes. As expected I am a little concerned with warranty refusal should an issue arise. Out of experience, which dealership service department can you guys recommend that would be the most lenient when it comes to aftermarket add-ons in the Dallas/Plano area?

I am considering full exhaust upgrade along with a tune and pulley changes. As expected I am a little concerned with warranty refusal should an issue arise. Out of experience, which dealership service department can you guys recommend that would be the most lenient when it comes to aftermarket add-ons in the Dallas/Plano area?
Dealers:
I have taken mine to Town East Ford and dealt with Keith in service who has taken care of me and installed my ford mods.

I THINK sam pack in Plano may be OK as well. They have quite a few shelbys and roush's and other modded mustangs there all the time. I can tell you from experience though don't go to sam pack in carrollton.
Aftermarket:
If you are looking for aftermarket places to have mods done I would recommend Dallas mustang, and Gear Heads in Arlington. I have been in both shops several times personally. I know there are many more out there, but I havent been to those shops and thats why I'm not recommending them.

I also use Town East Ford. But I use Lance Harris. They installed my 3.73 gears with no noise or problems. Lance is also a Mustang owner.