I bought a 67' K-member for my 66" Dart in High school(85') on someone's recommendation and it was about a 1/4' to wide, the bolt holes didn't line up, became $75 anchor. Turns out all I needed was V8 motor mount towers and V8 motor mounts and a V8 center link. I'm thinking of removing my Doug's D450 headers and going back to stock manifolds.