I swapped in an ls6 with a mild tick performance cam into my 4 door 66. The car is two tone and reminds me of a cream puff and I plan on keeping it that way for a sleeper look. I'm at the point of picking mufflers and wanted to see if I can get some options. I would like it to sound as close to a stock 6cyl as I can as my 3 year old will be in the back from time to time and don't want her ear drums blown out. Anyone using anything they really liked or disliked so I know what to stay away from?