Here’s a lovely Mazda RX8 we had in the workshop recently for a full stainless steel system.
Mazda RX8 stainless steel exhaust system
The genuine Mazda system, as you might imagine, is very, very expensive, so though a full bespoke stainless steel exhaust wasn’t cheap, it was still significantly less than the orginal manufacturer part and will have much greater longevity.
A nice by-product is the lovely sound the stainless sytem made, while remaining completely road legal.