I put Borla headers on my Wrangler ... twice! Both sets of headers failed from broken welds after about 20k miles. I switched to Banks headers (the diesel turbo guys). There was absolutely no comparison in workmanship. Where the header fits against the manifold gasket, the Borlas showed some pretty rough machining, whereas the Banks was polished like a mirror. The welds on the Banks are a work of art. I would have to think a long time before I put a Borla on my Crossfire. Now, if only Banks would produce a cat-back for the Crossfire ...