ok right now my car is lightly modded but i plan on a 350 crate this summer...right now i have 2.5'' exhaust..is that enough? or should i got with a single 3'' and maybe a 2 chamber or even one chamber flowmaster what do you all think? ill probably go ahead and run a high flow cat so ill be able to pass WV state inspection (not emmissions just visual, brakes, lights stuff like that) would a my headers, 3'' y pipe to a 3'' pipe and a two chamber flowmaster be to loud? and is 3'' enough for around 350hp?

 

Yes.

 

might be cheaper to get another 2.5" pipe and run them both in the stock location

 

3in will be fine.

 

ill probably go ahead and get 3'' all the way then...im assuming there will be little to no modifications necassary to get the headers and y pipe to fit from the 305 to the 350