The C-6 is considered a grenade-proof auto trans, but its also extremely heavy and its efficiency as a 'power-deliverer' is lowest of its contemporaries- like the C-4. You'll likely gain performance and fuel mileage from an upgrade due to both these factors, especially with one with an extra gear and a lock-up feature. Longchamps and Deauvilles are not sports cars but every little bit helps!
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.