I pressume bigger is better but is 2" good enough for a 401 for each bank? I have a ton of 2" laying around and a crossover pipe. :) Think it will hurt much? Also is anyone running a side exit exhaust? Im not looking for stock looking here. Im trying to do a period hop up/mild custom. Im not going crazy with it, just maybe doing some of the stuff to it if it was the 70's all over again!! Crap, I dont remember the 70's! :)