Click on the link that Mopardude posted in the very first link. That'll take you to the Performance Peddler's website. That's where the good price is but since some of the guys here have had bad customer serv. from The performance peddler you can call Summit and tell them you want the Doug's D453 headers and that The performance peddler advertises them at $537.64 and they'll match the price. Thus you get the great headers at a great price with great service.