Not an expert but mild steel mufflers produce a nicer more subdued sound than the raucous noise that stainless steel units make.
but we all have a choice.
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.