IMO the best 180's are made by Precision Proformance. They'll make them for any deck height and head style.
http://precisionproformance.com/exhaust.php
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.