well im not so sure if a $30 muffler from ebay is going to last.. and I understand you want a loud exhaust but those kind of mufflers are not going to sound very good in a g6, IMHO. if you get an aftermarket muffler with res. delete youll be just as loud as that without the ricey sound. but if you want the ricey sound then by all means go for it. like a super 10 flowmaster race series is hella loud without the resonator and would sound better than a fart can, but again if that's the sound your striving for then more power to ya. this is just my opinion. its your car go with what you like.