Can't find exhaust upgrade

Does anyone know of a performance exhaust kit for a 5 lug 2 wheel drive regular cab with no lift?

I can't find an answer anywhere.

also will the exhaust help or hurt my gas mileage?

 

Most bolt on performance parts are meant to give you better high end performance. Unfortunately, this may hurt low end HP and Torque, causing a drop in average around town fuel economy.

I assume you could just get a weld in muffler like any other car or truck that would improve sound and flow. MagnaFlow would be my choice...

 

Head up to your local muffler shop, have them weld in your choice of muffler, will save you time and money in the long run. I don't believe there are many options for the 4 banger anyway.