Flowmaster are junk, and belong on trucks, and old big engines. There are so many better exhaust out there. Check out Spin Tech's. SLP makes a nice system also. There're a bunch of systems out there.
It's not that easy to come out of a skid at 80+ MPH. Thats pretty light damage for an impact that hard. I wish I had some video from the time attacks this week quit a few accidents.