Header and true dual question
Personally, I'd go with a 2.5" TD setup with a custom H-pipe or a Flowmaster D-port merge, matched with 2 Magnaflow Metallic core catalytics converters and 2 Flowmaster single chamber (10-series) mufflers...but that's my opinion.
here's the webpage i made about installing them
http://www.stealthram.com/dynatech.htm


