Indeed "very odd" words also used by Tim Ayres when he was having a good look at my 4/4. Though, apparently, the exhaust layout is the normal for Morgan black top Zetecs
The exhaust manifold on my car is on the nearside, but the
exhaust is then routed under the engine, through the offside chassis rail and then proceeds along under the offside running board.
Remind me to show you when we next meet up.
It might also be described as standard Morgan factory engineering?