and reforming the pipe then they TIG welded the cracks. The exhaust manifold can be ported all by hand with a dremel and whole lot of patience, I suggest a aluminum oxide bit that is very well made otherwise they just break apart (Porter Cable bits suck, FYI!). I offer this service if you need it, but this is such a simple process to do I suggest most people do it themselves.... otherwise shoot me an email. But it is very easy to do. Now, if only I could get someone to bench test the manifolds I do VS a extrude honed one.