So i got a 92 k1500 with the 350 the engine is all stock with 130k miles it runs good and all that i got true duals no cats with these "coop performance mufflers" and 265/75/16 Kanati Mud hogs my truck has been averaging 7-9mpg i know these engines dont get amazing mpg's but I know many trucks of the same set ups and engines are getting alot better then what i do. I'm pretty certain my alignment is messed up because my tires are wearing really bad on the front tires really unevenly so i am going to get that looked at, but my question is what are some things i can do to get my mpg up i've heard Throttle Body Spacers, Computer Chips,Air intakes? opinions on those? any other options would be helpful.