Headers for the Duster
Check out TTI Exhaust's Website at:
http://www.ttiexhaust.com/Header-TTI340ABE/SBheaders.htm
Take note of all of the "Footnotes" for your application. Also consider the extra heat from the headers on any components that the headers may come close to such as the starter, spark plugs, oil filter, etc. While TTI headers are expensive, I've read threads that say they are worth it as they actually fit and perform well.
Good Luck,