Just finished the install with manifolds and mufflers - kept the stock cats. What a beautiful system, and the sound brings me a smile from ear-to-ear! Here's a couple of pics of the Tubi compared to stock components, I still need to snap a few 'after' photos - I ran out of daylight. Would recommend hihgly to anyone considering a swap; welds and fit are top-notch, and install is pretty easy.