holcombe347
+1y
its possible, but remember...to get that much horsepower off of the engine alone, your talking bigger cylinders, ported and polished intake, bigger cam, more fuel, ignition setup, electric fan, header, full exhaust, etc.....if your concerned with getting the best fuel economy, just utilize parts that make the existing engine run more efficient. like the electric fan, mild cam, exhaust and ignition. im currently getting around 25 mpg in my yota but i do alot of freeway driving with it for the most part. and i also have a 4 speed in it right now so that kinda kills the economy a little bit. but its pretty peppy