Hi all, I have a 2000 996S, with 50mm headers and termi carbon cans. It's too loud for my liking, and I would like to put stock alloy exhausts on it. I see that they varied throughout the years... Here is my question: Did the internals of stock 50mm alloy cans vary throughout the years ? Were they louder or quieter for any reason, or were they all the same inside, just plain until later years when the termignoni logo was eventually etched into them. Thanks!