thread turned into a flowmaster debate... 3 chamber flows aren't any good, not loud at all, i bought them first then got 2 chambers. i loved the sound of flowmasters. the mac kit that i have on my car now is alot nicer. u can unbolt the tailpipes. stainless kits are expensive, but great b/c they don't rust. headers are a good idea too. if i was u, i would save up the money and get it all done at once. alot easier to do it all at once.