Like David, I went with the chrome Dynatech headers. After 1 season I shipped them up the road and I went with Fab Shop headers. His radius bends and merge collectors are second to none. Tim is not a 1 header fits most shop. He makes his headers for your combo.
http://www.fabshopheaders.com/catego...downswept.html
Take the time to call and talk to Tim. He is a wealth of information and unlike many of the companies, he is willing to share what he knows in order to help you make the right decision, even if it is not his header.