2005 Bombing on a Budget

[Advantage Take]

the truck is a 2005 CTD auto 4x4. guages are the first, and after that theres about $2500 in the truck funds. i'm looking for a reliable towing truck that can really punch it goin down the road. upgrade with modules, turbos, valve bodies, torque converters, i want to hear what some of yall have done or want to do with your trucks. what would you do with a $2500 budget??????