Sal,
That's right. They would have to prove to you that the part has caused damage, and as far as the transmission, I highly doubt the exhaust will do anything towards it.
I would suggest starting a thread in the local section, that would usually get you the most hits as far as people that can help you with live audio. Only ones I have in mind are in the OC area. Once you are ready, feel free to give me a call at (818) 746 6997. Or simply visit our site
www.acuratlparts.com