m 03 silverado has a functional fiberglass hood air box with air raid filter gibson extreme duals is a automatic and has 4.10 gears which header is right edelbrock shortys or a long tube header i am looking for gas mileage and performance truck is a evey day driver

 

First, welcome to performance trucks. There is no comparison between the two. If you can, go long tube. Shorty's wont do much for you.

 

lt's pacesetter

 

Tri-Y midlengths.

 

I would get the Pacesetters. Mine should be arriving soon from Jet-Hot.