My ceramic coated headers on my Ultima dissipate heat really well and they are directly under a fiberglass clip.
Personally I don't like the heat wrap on a bare exhaust, however I'm not sure how it would interact on a ceramic coated one.
From what I have seen a lot of people are opting for a heat deflector shield on the underside of the hood.
Julian
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.