I had an entire system cat, tO tip installed for under $300. It was 2.5 inch, custom made to fit. It is not stainless. I opted to leave out the center box, thus it is a bit boomy between 3-4 Krpm. For $700 you could buy a 4KQ car with a good muffler on it. maybe not, though depending upon where you live. paul timmerman (at least partial serious)