Opinions on replacement H3 consideration

[3Hummer]

no intake or exhaust mods sadly , on a tight budget since its my first car and everythings gotta pass by my parents before i do it, all the stuff ive got is listed in my signiture. Come my birthday next month im gonna be size up to 33" tires and then i think my gas mileage will probably go down a tiny bit. I try to use cruise control as much as possible to try to get the best gas mileage as possible.