Yes, the exhaust head pipe was 2 1/4" if I am not mistaken, however, the exhaust manifold outlet was the stock size. Kinda defeated the purpose. Take a look at this thread. My friend Freddie opened up the outlet on the manifold I am running on Vixen now. It's 2 1/4". He also has done another one to 2.5". I never would have imagined there was enough meat in them to do it, but there was. I don't have a larger pipe on her yet, but it's coming soon.
