i had a single flowmaster delta flow on my stock manifolds and single 2 inch pipe and it sounded good. pretty loud from the back of the car, but failrly quiet on the inside. muffler was very clean sounding, and with duals and headers it would have sounded really nice. i switched to the long tube headers and dual flowmaster 40 series muffler because they are supposedly the loudest. i would agree with that statement because they made my weak 318 sound like it has allot more than it does. although people will be more inclined to race with you :snakeman:. the mufflers sound awesome, but they are very loud and if you plan on driving late at night or early in the morning, your neighbors might not like you so much. ask me how i know :-D :thebirdm: . also, if you plan on having a stereo, make it a good one and dynamat your car. i will be doing all of the previously stated to tone down the noise inside the car. look on flowmasters website for application of each series, and then hit craigslist. i bought my set of 2.5 40 series basically brand new for $100. guy put them on his gto and said they were to loud. pulled them off 2 months later in like new condition. you can find good deals online on used mufflers if you look around a little
