i would say b&b or corsa on the catback. i just got a set of dynatech's


i love arrival blue

 

Dybatech's rule but i just got ASM's.

 

Welcome back. Enjoy the truck!!!

 

with a 6 liter you can stick a very sizable cam in it i would look at the sticky at the top of the page for suggestions it is a very good post i see everybody recommending ASM headers and cant help but to agree i know several people that have them (though none are me) and love them to death and other mods always a converter and maybe some different gears might help out or as you say you can always go FI right off the bat