Now I know alot of people threw out this form are against flowmasters but if you go to their website flowmastermufflers.com and listen to the soundbytes I believe they have a sound byte of a V6 and it sounds better then my stock system with a 350 in it. But as said above get the full system, also I found out wether this is true or not but single exhaust is better the dual, because right now my system is being killed because another placed ridged up true duals on a car thats not ment for true dual and the sound is weak. So just make sure to get the right kit for your car, and btw I found the flowmaster kit for my car brand new on ebay for about 2oo dollars less, that is if your one to trust ebay, but if you go to a muffler shop they will give you reccommendations for your car and be able to get the mufflers/system alot cheaper and you will end up saving some good amount of money
Hope this helps
Eddie W.