Sorry about taking so long to get back to you on this, it was so nice out finally, I had to indulge my other passion and go for a ride. Anyway The Calmini system fit properly, seems to be made of standard exhaust tubing, ie. not stainless but ok none the less. The muffler and cat are off the shelf items, but the header is very well built, and ceramic coated. For the price I think it's a pretty fair deal. You may be able to find the indivdual pieces a bit cheaper if you know what to look for, but they pull it all together for you, bend the tubes, and it all bolts up the way it should and works and sounds great in my opinion.