what is the =muffler size required for Vt 98 commodore?

[VT_Commodore_Lover]

Hey all, I have a 98 VT commodore and i am looking to add a muffler to the end of the exhaust pipe. What size will I need? And willl this make the car any louder?

 

[luke23]

mabey talk to your local exhaust shop mate, tell them exactly what you want and they will give you idea's and prices, my mate has a vt with pacemaker extracters, 2.5 inch straight pipe and a hot dog and it sounds pretty loud and thats a v6