This may be of interest to anybody contemplating a different Duratec manifold. I ended up fitting an alternative to the Librands. It differs in as much that it uses the standard cat but has the 4 into 1 restricted section removed. Had it on a few weeks now and am happy with the results. It was supplied and fitted by Infinity Exhausts. They have a lot of Morgan experience but don’t advertise the fact. They build and supply bespoke sport Morgan systems for a local dealer and offer several alternatives depending on your requirements