By the way, I am hoping to soon be ordering a set of H.O. manifolds from R.A.R.E. for my 67 LeMans, very similar to the LBMs just not as long and were designed specifically for the 66/67 "A-body" cars. I can't wait to get them on my car along with a nice 2-1/2" dual exhaust kit from R.A.R.E. Their exhaust systems absolutely blow away the ones from Pypes IMO. I've seen them side by side and there is no comparison.