ANY weight in the 2.3 will decrease mileage alot. I deliver construction materials for my job all the time and my gas mileage sucks when alot of weight is involved.
2003 Ford Ranger, 2.3, XLT Single cab
K&N Air Filter, 3 inch coil spacers with Add a Leaf, 31" Wild Country M/T,Chrome Wheels, Flowmaster 40 Series, 120" CB antenna, Cobra 380 CB, Custom Interior, Cab Lights, Tinted windows, Green HID kits, 2 Memphis 10's, Alpine V500 Amp, 4 Kenwood 6x9's, 600 watt Pioneer amp,Custom Camo Box, Blue, Green, Red and Pink leds. Custom Headliner, Explorer OHC, Autodim Rearview Mirror with Autolamps, Lighted Visors