well, now that you guys went off on a tangent and started fighting, here is my answer, then the thread is closed:
a bolt in 3" downpipe from ZZP will bolt in to the stock manifolds as well as the stock cat back. there will be no change in sound, and if there is any it will be very minimal. porting the front manifold will only give marginal gains. with the price of headers nowadays, its a waste to not jump on a set.
if you have any more questions about other stuff, start a new thread and hopefully no one will **** all over it like this one. sorry for your loss.
