Hey everyone . I am going to be doing my exhaust relativly soon.and i was wondering wut size piping i should use for my exhaust...i just got a muffler that has a 2.5 inch inlet .i don t know the size of a the stock piping.id assume no larger than1.5 inch in diameter.....wut sze would be suitable for the Type of engine i have(ZC) well for now i am just looking to replace from the cat back. Any ideas?

 

you should use 2.5 to match the muffler and it is a good size for a performance cat back piping.