With the wiper sweep they do check it, as mine actually failed !
Joules 5 ( julian ) was able to help me there.
For the noise I made a flange plate behind the muffler and fitted restrictor plates with qty 4 10mm holes in each one. this made it quiet enough to get the certificate.
just make sure you have left or right park wipers and where your stubs sit left or right.
Mine was a real weird one, but is sorted now.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.