Are the factory 6.1L header bolts grade 8?
Looking to do a header install this summer. I have a 2005 5.7L. I see people are using the factory Mopar manifold gaskets and 6.1L header bolts. I don't see any grade on the websites though. I know the factory bolts on the 5.7 are prone to rusting and breaking. Would like to avoid that.