The Librands manifold for the Crossflow engined 4/4 is an absolutely fantastic piece of fabrication

What's more it flows really well too, much better than the factory manifold. Out of interest, I cut open the original factory mild steel manifold, and it was horrible inside with great gobs of weld and narrowing inside to disrupt the flow.

I had a complete lifetime guaranteed stainless exhaust system (manifold through to tailpipe) made by a lad near Llangefni on Anglesey for £150 about 5 years ago. Its absolutely fantastic quality and according to noise tests, (on an MSA approved noise meter), each reading has been within 1.5% of the original figure so no deterioration to the packing.

A word of caution though for those considering having a system made for the earlier Mogs esp 3 wheelers. Imperial sized stainless exhaust tubing is getting harder and harder to source!!

Arwyn