Bump
I put one of these systems on my 2003 360 Spider, with the valves plugged in 2018. Amazing improvement in sound. Sounded much closer to an F430 and I thought a bit deeper than a Tubi branded exhaust that I have heard. Although it is a Tubi system, as mentioned above. It is not as loud as a Challenge Stradale system. At first I thought I was buying one of those at an extremely great price but found it was a Tubi system. My dealer installed it and said they would remove it if I did not like the sound since they had not heard the sound. I loved the sound. I traded that car for a 458 Spider. Asking price is very good as well.
I'm the new owner and it's a beautiful valved system with all the nuts, bolts and gaskets. Coupled with the Tubi shielded headers I bought previously, and the Tubi test pipes (or high flow cats I already have), it should be quite a nice system. Thanks!