Hi Speed, thanks for the input....but these manifolds have the bell shape on the outside, there are no ears with either holes for bolts or studs, and the header pipes are straight...after some research I'm beginning to believe that the header pipe should be shaped the same as the manifold with a sleeve inside to hold an exhaust donut, then a two part clamp holds the two bell shaped ends together. I haven't found new header pipes or clamps so I am working on a design that would hold the pipes up into the manifold somehow......any ideas anybody.......lamarB
