I put long branch manifolds on my 67 vert 4 speed and got the 2 1/4" headpipes from Year One. They bolt right up to the manifold flanges and run up above the x-brace back to the mufflers. Part#'s H01LH and H01RH, $73/ea. I think that's the way to go if you can handle 2 1/4" vs 2 1/2" pipes.
